/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=DEEPEST --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/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:33:55,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:33:55,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:33:55,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:33:55,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:33:55,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:33:55,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:33:55,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:33:55,314 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:33:55,315 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:33:55,316 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:33:55,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:33:55,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:33:55,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:33:55,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:33:55,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:33:55,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:33:55,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:33:55,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:33:55,329 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:33:55,330 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:33:55,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:33:55,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:33:55,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:33:55,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:33:55,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:33:55,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:33:55,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:33:55,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:33:55,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:33:55,368 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:33:55,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:33:55,376 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:33:55,381 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:33:55,382 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:33:55,382 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:33:55,383 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:33:55,385 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:33:55,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:33:55,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:33:55,387 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:33:55,391 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 [2020-10-27 23:33:55,421 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:33:55,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:33:55,422 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:33:55,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:33:55,423 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:33:55,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:33:55,423 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:33:55,423 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:33:55,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:33:55,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:33:55,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:33:55,424 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:33:55,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:33:55,424 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:33:55,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:33:55,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:33:55,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:33:55,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:33:55,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:33:55,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:33:55,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:33:55,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:33:55,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:33:55,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:33:55,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:33:55,427 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:33:55,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:33:55,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:33:55,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:33:55,427 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:33:55,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:33:55,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:33:55,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:33:55,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:33:55,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:33:55,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 23:33:55,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade3f2cd5/b90ebe33b5b14193a1b5aa7a24e6f43c/FLAG2c780e6a5 [2020-10-27 23:33:56,539 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:33:56,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 23:33:56,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade3f2cd5/b90ebe33b5b14193a1b5aa7a24e6f43c/FLAG2c780e6a5 [2020-10-27 23:33:56,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ade3f2cd5/b90ebe33b5b14193a1b5aa7a24e6f43c [2020-10-27 23:33:56,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:33:56,822 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:33:56,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:33:56,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:33:56,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:33:56,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:33:56" (1/1) ... [2020-10-27 23:33:56,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3235c505 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:56, skipping insertion in model container [2020-10-27 23:33:56,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:33:56" (1/1) ... [2020-10-27 23:33:56,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:33:56,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:33:57,403 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:33:57,422 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:33:57,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:33:57,755 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:33:57,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57 WrapperNode [2020-10-27 23:33:57,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:33:57,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:33:57,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:33:57,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:33:57,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (1/1) ... [2020-10-27 23:33:57,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (1/1) ... [2020-10-27 23:33:57,789 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (1/1) ... [2020-10-27 23:33:57,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (1/1) ... [2020-10-27 23:33:57,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (1/1) ... [2020-10-27 23:33:57,848 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (1/1) ... [2020-10-27 23:33:57,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (1/1) ... [2020-10-27 23:33:57,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:33:57,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:33:57,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:33:57,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:33:57,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (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 [2020-10-27 23:33:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:33:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:33:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:33:57,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:33:57,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:33:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:33:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:33:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:33:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:33:57,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:33:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:33:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:33:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:33:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:33:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:33:57,955 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:33:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:33:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:33:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:33:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:33:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:33:57,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:33:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:33:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:33:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:33:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:33:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:33:57,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:33:59,842 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:33:59,842 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:33:59,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:33:59 BoogieIcfgContainer [2020-10-27 23:33:59,845 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:33:59,847 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:33:59,847 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:33:59,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:33:59,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:33:56" (1/3) ... [2020-10-27 23:33:59,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b684c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:33:59, skipping insertion in model container [2020-10-27 23:33:59,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:33:57" (2/3) ... [2020-10-27 23:33:59,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40b684c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:33:59, skipping insertion in model container [2020-10-27 23:33:59,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:33:59" (3/3) ... [2020-10-27 23:33:59,853 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 23:33:59,865 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:33:59,870 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:33:59,883 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:33:59,913 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:33:59,913 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:33:59,913 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:33:59,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:33:59,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:33:59,914 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:33:59,914 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:33:59,914 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:33:59,940 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-27 23:33:59,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 23:33:59,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:33:59,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:33:59,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:33:59,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:33:59,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1566272280, now seen corresponding path program 1 times [2020-10-27 23:33:59,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:33:59,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723749041] [2020-10-27 23:33:59,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:00,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:00,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:01,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:02,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:02,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:05,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:05,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 23:34:05,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:34:05,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-27 23:34:05,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:34:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-27 23:34:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:34:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:34:06,682 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:34:06,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:06,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:06,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:06,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:06,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:06,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 23:34:06,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:06,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:06,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:06,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:06,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723749041] [2020-10-27 23:34:06,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:06,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:34:06,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584632218] [2020-10-27 23:34:06,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:34:06,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:06,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:34:06,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:34:06,796 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 7 states. [2020-10-27 23:34:08,019 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 23:34:12,265 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:34:13,460 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:34:14,600 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:34:16,008 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:34:17,167 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:34:18,321 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 283 [2020-10-27 23:34:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:18,488 INFO L93 Difference]: Finished difference Result 1384 states and 2365 transitions. [2020-10-27 23:34:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 23:34:18,490 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-27 23:34:18,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:18,521 INFO L225 Difference]: With dead ends: 1384 [2020-10-27 23:34:18,522 INFO L226 Difference]: Without dead ends: 1217 [2020-10-27 23:34:18,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-10-27 23:34:18,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2020-10-27 23:34:18,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 446. [2020-10-27 23:34:18,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-10-27 23:34:18,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 743 transitions. [2020-10-27 23:34:18,650 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 743 transitions. Word has length 116 [2020-10-27 23:34:18,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:18,651 INFO L481 AbstractCegarLoop]: Abstraction has 446 states and 743 transitions. [2020-10-27 23:34:18,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:34:18,651 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 743 transitions. [2020-10-27 23:34:18,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 23:34:18,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:18,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:18,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:34:18,659 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:18,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:18,660 INFO L82 PathProgramCache]: Analyzing trace with hash 933016100, now seen corresponding path program 1 times [2020-10-27 23:34:18,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:18,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782008080] [2020-10-27 23:34:18,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:18,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:18,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:20,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:23,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:23,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 23:34:23,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:34:23,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 23:34:23,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 23:34:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:34:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 23:34:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:25,032 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:34:25,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:25,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:25,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:25,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:25,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:25,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:34:25,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:25,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:25,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:25,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:25,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:25,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782008080] [2020-10-27 23:34:25,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:25,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 23:34:25,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850282702] [2020-10-27 23:34:25,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 23:34:25,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:25,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 23:34:25,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:34:25,138 INFO L87 Difference]: Start difference. First operand 446 states and 743 transitions. Second operand 8 states. [2020-10-27 23:34:26,417 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 290 [2020-10-27 23:34:30,269 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:34:31,508 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:34:32,657 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:34:33,874 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 287 [2020-10-27 23:34:35,169 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 287 [2020-10-27 23:34:36,440 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 23:34:37,648 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 285 [2020-10-27 23:34:39,518 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 289 [2020-10-27 23:34:40,812 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 287 [2020-10-27 23:34:42,498 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 23:34:43,697 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:34:43,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:43,722 INFO L93 Difference]: Finished difference Result 3116 states and 5250 transitions. [2020-10-27 23:34:43,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 23:34:43,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 117 [2020-10-27 23:34:43,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:43,739 INFO L225 Difference]: With dead ends: 3116 [2020-10-27 23:34:43,739 INFO L226 Difference]: Without dead ends: 2863 [2020-10-27 23:34:43,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 15.6s TimeCoverageRelationStatistics Valid=257, Invalid=673, Unknown=0, NotChecked=0, Total=930 [2020-10-27 23:34:43,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-10-27 23:34:43,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 1124. [2020-10-27 23:34:43,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1124 states. [2020-10-27 23:34:43,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1892 transitions. [2020-10-27 23:34:43,849 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1892 transitions. Word has length 117 [2020-10-27 23:34:43,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:43,850 INFO L481 AbstractCegarLoop]: Abstraction has 1124 states and 1892 transitions. [2020-10-27 23:34:43,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 23:34:43,850 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1892 transitions. [2020-10-27 23:34:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-27 23:34:43,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:43,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:43,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:34:43,856 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:43,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:43,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1242843265, now seen corresponding path program 1 times [2020-10-27 23:34:43,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:43,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399101238] [2020-10-27 23:34:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:43,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:44,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:44,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:44,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:45,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:48,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:48,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 23:34:48,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:34:48,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:34:48,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:34:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 23:34:48,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:34:48,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:50,255 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:34:50,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:34:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:50,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:50,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:34:50,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:34:50,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:34:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 23:34:50,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:34:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:34:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:34:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:34:50,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:34:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:34:50,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399101238] [2020-10-27 23:34:50,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:34:50,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:34:50,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134333676] [2020-10-27 23:34:50,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:34:50,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:34:50,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:34:50,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:34:50,347 INFO L87 Difference]: Start difference. First operand 1124 states and 1892 transitions. Second operand 5 states. [2020-10-27 23:34:51,555 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:34:55,036 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:34:55,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:34:55,210 INFO L93 Difference]: Finished difference Result 3684 states and 6229 transitions. [2020-10-27 23:34:55,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:34:55,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2020-10-27 23:34:55,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:34:55,227 INFO L225 Difference]: With dead ends: 3684 [2020-10-27 23:34:55,228 INFO L226 Difference]: Without dead ends: 2843 [2020-10-27 23:34:55,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:34:55,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2020-10-27 23:34:55,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 1992. [2020-10-27 23:34:55,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1992 states. [2020-10-27 23:34:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1992 states to 1992 states and 3361 transitions. [2020-10-27 23:34:55,429 INFO L78 Accepts]: Start accepts. Automaton has 1992 states and 3361 transitions. Word has length 118 [2020-10-27 23:34:55,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:34:55,431 INFO L481 AbstractCegarLoop]: Abstraction has 1992 states and 3361 transitions. [2020-10-27 23:34:55,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:34:55,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1992 states and 3361 transitions. [2020-10-27 23:34:55,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 23:34:55,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:34:55,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:34:55,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:34:55,441 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:34:55,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:34:55,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1896117795, now seen corresponding path program 1 times [2020-10-27 23:34:55,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:34:55,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706695012] [2020-10-27 23:34:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:34:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:34:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:55,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:56,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:34:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:00,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:00,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 23:35:00,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:35:00,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 23:35:00,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-27 23:35:00,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:35:00,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:35:01,691 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:35:01,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:01,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:01,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:01,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:01,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:01,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:35:01,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:01,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:01,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:01,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:01,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706695012] [2020-10-27 23:35:01,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:01,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:01,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929811722] [2020-10-27 23:35:01,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:01,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:01,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:01,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:01,753 INFO L87 Difference]: Start difference. First operand 1992 states and 3361 transitions. Second operand 5 states. [2020-10-27 23:35:02,940 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:35:06,504 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:35:06,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:06,777 INFO L93 Difference]: Finished difference Result 7028 states and 11883 transitions. [2020-10-27 23:35:06,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:35:06,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 23:35:06,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:06,806 INFO L225 Difference]: With dead ends: 7028 [2020-10-27 23:35:06,807 INFO L226 Difference]: Without dead ends: 5356 [2020-10-27 23:35:06,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:35:06,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2020-10-27 23:35:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 3667. [2020-10-27 23:35:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3667 states. [2020-10-27 23:35:07,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 6189 transitions. [2020-10-27 23:35:07,160 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 6189 transitions. Word has length 119 [2020-10-27 23:35:07,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:07,160 INFO L481 AbstractCegarLoop]: Abstraction has 3667 states and 6189 transitions. [2020-10-27 23:35:07,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:07,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 6189 transitions. [2020-10-27 23:35:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 23:35:07,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:07,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:07,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:35:07,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:07,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:07,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1171593010, now seen corresponding path program 1 times [2020-10-27 23:35:07,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:07,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822088826] [2020-10-27 23:35:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:07,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:07,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:07,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:08,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:12,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:12,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 23:35:12,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:35:12,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:35:12,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 23:35:12,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 23:35:12,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:13,392 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:35:13,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:13,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:13,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:13,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:13,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:13,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:13,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:35:13,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:13,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:13,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:13,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:13,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:13,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822088826] [2020-10-27 23:35:13,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:13,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:13,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290959328] [2020-10-27 23:35:13,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:13,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:13,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:13,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:13,467 INFO L87 Difference]: Start difference. First operand 3667 states and 6189 transitions. Second operand 4 states. [2020-10-27 23:35:14,692 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:35:17,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:17,693 INFO L93 Difference]: Finished difference Result 9625 states and 16257 transitions. [2020-10-27 23:35:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:17,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-27 23:35:17,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:17,726 INFO L225 Difference]: With dead ends: 9625 [2020-10-27 23:35:17,726 INFO L226 Difference]: Without dead ends: 6242 [2020-10-27 23:35:17,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:17,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6242 states. [2020-10-27 23:35:18,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6242 to 6239. [2020-10-27 23:35:18,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6239 states. [2020-10-27 23:35:18,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 10499 transitions. [2020-10-27 23:35:18,251 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 10499 transitions. Word has length 120 [2020-10-27 23:35:18,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:18,251 INFO L481 AbstractCegarLoop]: Abstraction has 6239 states and 10499 transitions. [2020-10-27 23:35:18,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:18,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 10499 transitions. [2020-10-27 23:35:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 23:35:18,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:18,254 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:18,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:35:18,255 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:18,255 INFO L82 PathProgramCache]: Analyzing trace with hash -278364134, now seen corresponding path program 1 times [2020-10-27 23:35:18,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:18,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030591093] [2020-10-27 23:35:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:18,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:18,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:19,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:19,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:23,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:23,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 23:35:23,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:35:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 23:35:23,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:35:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-27 23:35:23,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 23:35:23,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:24,430 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:35:24,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:24,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:24,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:24,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:24,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:35:24,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:24,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:24,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:24,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:24,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030591093] [2020-10-27 23:35:24,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:24,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:35:24,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559928844] [2020-10-27 23:35:24,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:35:24,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:24,490 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:35:24,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:24,491 INFO L87 Difference]: Start difference. First operand 6239 states and 10499 transitions. Second operand 5 states. [2020-10-27 23:35:25,742 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:35:29,154 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:35:30,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:30,208 INFO L93 Difference]: Finished difference Result 24050 states and 40505 transitions. [2020-10-27 23:35:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:35:30,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 23:35:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:30,272 INFO L225 Difference]: With dead ends: 24050 [2020-10-27 23:35:30,272 INFO L226 Difference]: Without dead ends: 18113 [2020-10-27 23:35:30,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 23:35:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18113 states. [2020-10-27 23:35:31,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18113 to 12117. [2020-10-27 23:35:31,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12117 states. [2020-10-27 23:35:31,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12117 states to 12117 states and 20355 transitions. [2020-10-27 23:35:31,457 INFO L78 Accepts]: Start accepts. Automaton has 12117 states and 20355 transitions. Word has length 120 [2020-10-27 23:35:31,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:31,457 INFO L481 AbstractCegarLoop]: Abstraction has 12117 states and 20355 transitions. [2020-10-27 23:35:31,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:35:31,457 INFO L276 IsEmpty]: Start isEmpty. Operand 12117 states and 20355 transitions. [2020-10-27 23:35:31,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 23:35:31,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:31,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:31,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:35:31,461 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:31,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1579591832, now seen corresponding path program 1 times [2020-10-27 23:35:31,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:31,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667354137] [2020-10-27 23:35:31,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:31,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:36,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:36,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:36,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 23:35:36,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:35:36,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 23:35:36,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:36,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 23:35:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 23:35:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:37,714 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:35:37,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:37,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:37,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:37,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:37,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:37,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:35:37,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:37,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:37,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:37,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:37,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:37,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667354137] [2020-10-27 23:35:37,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:37,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:37,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446270672] [2020-10-27 23:35:37,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:37,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:37,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:37,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:37,765 INFO L87 Difference]: Start difference. First operand 12117 states and 20355 transitions. Second operand 4 states. [2020-10-27 23:35:38,944 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:35:42,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:42,613 INFO L93 Difference]: Finished difference Result 32891 states and 55255 transitions. [2020-10-27 23:35:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:42,615 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-27 23:35:42,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:42,667 INFO L225 Difference]: With dead ends: 32891 [2020-10-27 23:35:42,667 INFO L226 Difference]: Without dead ends: 21060 [2020-10-27 23:35:42,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:42,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21060 states. [2020-10-27 23:35:44,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21060 to 21000. [2020-10-27 23:35:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21000 states. [2020-10-27 23:35:44,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21000 states to 21000 states and 35162 transitions. [2020-10-27 23:35:44,049 INFO L78 Accepts]: Start accepts. Automaton has 21000 states and 35162 transitions. Word has length 120 [2020-10-27 23:35:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:44,050 INFO L481 AbstractCegarLoop]: Abstraction has 21000 states and 35162 transitions. [2020-10-27 23:35:44,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:44,050 INFO L276 IsEmpty]: Start isEmpty. Operand 21000 states and 35162 transitions. [2020-10-27 23:35:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 23:35:44,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:44,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:44,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:35:44,053 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:44,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:44,054 INFO L82 PathProgramCache]: Analyzing trace with hash 884265044, now seen corresponding path program 1 times [2020-10-27 23:35:44,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:44,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [867218471] [2020-10-27 23:35:44,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:44,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:44,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:49,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:49,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 23:35:49,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:35:49,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:35:49,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:49,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:35:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-27 23:35:49,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 23:35:49,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:50,227 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:35:50,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:35:50,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:50,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:50,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:35:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:35:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:35:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 23:35:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:35:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:35:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:35:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:35:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:35:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:35:50,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [867218471] [2020-10-27 23:35:50,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:35:50,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:35:50,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630786396] [2020-10-27 23:35:50,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:35:50,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:35:50,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:35:50,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:35:50,281 INFO L87 Difference]: Start difference. First operand 21000 states and 35162 transitions. Second operand 4 states. [2020-10-27 23:35:51,453 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:35:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:35:56,176 INFO L93 Difference]: Finished difference Result 56830 states and 95102 transitions. [2020-10-27 23:35:56,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:35:56,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-27 23:35:56,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:35:56,263 INFO L225 Difference]: With dead ends: 56830 [2020-10-27 23:35:56,263 INFO L226 Difference]: Without dead ends: 36051 [2020-10-27 23:35:56,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:35:56,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36051 states. [2020-10-27 23:35:58,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36051 to 36020. [2020-10-27 23:35:58,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36020 states. [2020-10-27 23:35:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36020 states to 36020 states and 60027 transitions. [2020-10-27 23:35:58,778 INFO L78 Accepts]: Start accepts. Automaton has 36020 states and 60027 transitions. Word has length 120 [2020-10-27 23:35:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:35:58,779 INFO L481 AbstractCegarLoop]: Abstraction has 36020 states and 60027 transitions. [2020-10-27 23:35:58,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:35:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand 36020 states and 60027 transitions. [2020-10-27 23:35:58,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 23:35:58,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:35:58,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:35:58,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:35:58,782 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:35:58,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:35:58,782 INFO L82 PathProgramCache]: Analyzing trace with hash 1055639366, now seen corresponding path program 1 times [2020-10-27 23:35:58,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:35:58,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542307153] [2020-10-27 23:35:58,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:35:58,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:35:58,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:58,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:35:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:03,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:03,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 23:36:03,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 23:36:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 23:36:03,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 23:36:03,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 23:36:03,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:04,948 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:36:04,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:04,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:04,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:36:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:04,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542307153] [2020-10-27 23:36:04,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:04,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:04,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094884459] [2020-10-27 23:36:04,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:04,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:04,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:04,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:04,997 INFO L87 Difference]: Start difference. First operand 36020 states and 60027 transitions. Second operand 4 states. [2020-10-27 23:36:06,277 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 284 [2020-10-27 23:36:12,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:12,781 INFO L93 Difference]: Finished difference Result 96218 states and 160127 transitions. [2020-10-27 23:36:12,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:12,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-27 23:36:12,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:12,929 INFO L225 Difference]: With dead ends: 96218 [2020-10-27 23:36:12,929 INFO L226 Difference]: Without dead ends: 60391 [2020-10-27 23:36:13,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:13,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60391 states. [2020-10-27 23:36:17,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60391 to 60388. [2020-10-27 23:36:17,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60388 states. [2020-10-27 23:36:17,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60388 states to 60388 states and 99963 transitions. [2020-10-27 23:36:17,356 INFO L78 Accepts]: Start accepts. Automaton has 60388 states and 99963 transitions. Word has length 120 [2020-10-27 23:36:17,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:17,357 INFO L481 AbstractCegarLoop]: Abstraction has 60388 states and 99963 transitions. [2020-10-27 23:36:17,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:36:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 60388 states and 99963 transitions. [2020-10-27 23:36:17,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 23:36:17,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:17,358 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:17,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:36:17,358 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:17,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:17,359 INFO L82 PathProgramCache]: Analyzing trace with hash -183710358, now seen corresponding path program 1 times [2020-10-27 23:36:17,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:17,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509493154] [2020-10-27 23:36:17,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:17,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:17,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:17,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:17,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:18,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:18,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:21,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:21,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 23:36:21,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:36:21,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3872 [2020-10-27 23:36:21,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 23:36:21,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 23:36:21,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:22,398 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:36:22,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:22,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:22,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:22,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:22,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:22,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:36:22,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:22,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:22,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:22,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509493154] [2020-10-27 23:36:22,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:22,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:22,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147429499] [2020-10-27 23:36:22,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:22,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:22,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:22,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:22,452 INFO L87 Difference]: Start difference. First operand 60388 states and 99963 transitions. Second operand 4 states. [2020-10-27 23:36:25,490 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:36:31,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:31,775 INFO L93 Difference]: Finished difference Result 155178 states and 255391 transitions. [2020-10-27 23:36:31,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:31,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-27 23:36:31,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:31,947 INFO L225 Difference]: With dead ends: 155178 [2020-10-27 23:36:31,947 INFO L226 Difference]: Without dead ends: 94983 [2020-10-27 23:36:32,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94983 states. [2020-10-27 23:36:38,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94983 to 94980. [2020-10-27 23:36:38,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94980 states. [2020-10-27 23:36:38,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94980 states to 94980 states and 153819 transitions. [2020-10-27 23:36:38,639 INFO L78 Accepts]: Start accepts. Automaton has 94980 states and 153819 transitions. Word has length 122 [2020-10-27 23:36:38,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:36:38,640 INFO L481 AbstractCegarLoop]: Abstraction has 94980 states and 153819 transitions. [2020-10-27 23:36:38,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:36:38,640 INFO L276 IsEmpty]: Start isEmpty. Operand 94980 states and 153819 transitions. [2020-10-27 23:36:38,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 23:36:38,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:36:38,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:36:38,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:36:38,642 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:36:38,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:36:38,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1227631797, now seen corresponding path program 1 times [2020-10-27 23:36:38,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:36:38,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220810621] [2020-10-27 23:36:38,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:36:38,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:38,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:38,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:39,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:39,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:39,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:40,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:40,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-27 23:36:40,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:36:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1705 [2020-10-27 23:36:40,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:40,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:36:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-27 23:36:40,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 23:36:40,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:41,558 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:36:41,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:36:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:36:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:36:41,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:36:41,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:36:41,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:36:41,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:36:41,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:36:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:36:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:36:41,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:36:41,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:36:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:36:41,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220810621] [2020-10-27 23:36:41,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:36:41,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:36:41,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487802315] [2020-10-27 23:36:41,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:36:41,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:36:41,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:36:41,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:36:41,602 INFO L87 Difference]: Start difference. First operand 94980 states and 153819 transitions. Second operand 4 states. [2020-10-27 23:36:42,779 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:36:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:36:52,458 INFO L93 Difference]: Finished difference Result 215192 states and 348031 transitions. [2020-10-27 23:36:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:36:52,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-27 23:36:52,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:36:52,635 INFO L225 Difference]: With dead ends: 215192 [2020-10-27 23:36:52,635 INFO L226 Difference]: Without dead ends: 120405 [2020-10-27 23:36:52,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:36:52,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120405 states. [2020-10-27 23:37:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120405 to 120402. [2020-10-27 23:37:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120402 states. [2020-10-27 23:37:00,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120402 states to 120402 states and 194139 transitions. [2020-10-27 23:37:00,681 INFO L78 Accepts]: Start accepts. Automaton has 120402 states and 194139 transitions. Word has length 123 [2020-10-27 23:37:00,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:00,681 INFO L481 AbstractCegarLoop]: Abstraction has 120402 states and 194139 transitions. [2020-10-27 23:37:00,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:37:00,681 INFO L276 IsEmpty]: Start isEmpty. Operand 120402 states and 194139 transitions. [2020-10-27 23:37:00,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 23:37:00,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:00,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:37:00,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:37:00,683 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:00,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:00,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1192665683, now seen corresponding path program 1 times [2020-10-27 23:37:00,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:00,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110292111] [2020-10-27 23:37:00,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:00,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:00,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:00,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:01,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:01,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:04,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:04,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:05,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:05,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 23:37:05,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:37:05,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 23:37:05,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:05,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:37:05,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-27 23:37:05,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 23:37:05,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:06,862 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 23:37:06,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:37:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:06,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:06,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:37:06,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:37:06,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:37:06,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:37:06,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:37:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:37:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:37:06,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:37:06,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:37:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:37:06,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110292111] [2020-10-27 23:37:06,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:37:06,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:37:06,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365368477] [2020-10-27 23:37:06,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:37:06,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:37:06,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:37:06,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:37:06,903 INFO L87 Difference]: Start difference. First operand 120402 states and 194139 transitions. Second operand 4 states. [2020-10-27 23:37:08,071 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 23:37:19,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:37:19,349 INFO L93 Difference]: Finished difference Result 272592 states and 438977 transitions. [2020-10-27 23:37:19,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:37:19,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2020-10-27 23:37:19,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:37:19,715 INFO L225 Difference]: With dead ends: 272592 [2020-10-27 23:37:19,715 INFO L226 Difference]: Without dead ends: 152473 [2020-10-27 23:37:19,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:37:19,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152473 states. [2020-10-27 23:37:29,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152473 to 152470. [2020-10-27 23:37:29,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152470 states. [2020-10-27 23:37:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152470 states to 152470 states and 244807 transitions. [2020-10-27 23:37:29,686 INFO L78 Accepts]: Start accepts. Automaton has 152470 states and 244807 transitions. Word has length 126 [2020-10-27 23:37:29,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:37:29,687 INFO L481 AbstractCegarLoop]: Abstraction has 152470 states and 244807 transitions. [2020-10-27 23:37:29,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:37:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 152470 states and 244807 transitions. [2020-10-27 23:37:29,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 23:37:29,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:37:29,688 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:37:29,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:37:29,689 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:37:29,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:37:29,689 INFO L82 PathProgramCache]: Analyzing trace with hash 253088433, now seen corresponding path program 1 times [2020-10-27 23:37:29,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:37:29,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196711525] [2020-10-27 23:37:29,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:37:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:37:30,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:30,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:30,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:30,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:37:30,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking...