/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/heap-data/shared_mem2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 14:35:07,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 14:35:07,750 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 14:35:07,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 14:35:07,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 14:35:07,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 14:35:07,788 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 14:35:07,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 14:35:07,792 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 14:35:07,793 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 14:35:07,794 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 14:35:07,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 14:35:07,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 14:35:07,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 14:35:07,799 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 14:35:07,800 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 14:35:07,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 14:35:07,802 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 14:35:07,804 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 14:35:07,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 14:35:07,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 14:35:07,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 14:35:07,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 14:35:07,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 14:35:07,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 14:35:07,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 14:35:07,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 14:35:07,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 14:35:07,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 14:35:07,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 14:35:07,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 14:35:07,832 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 14:35:07,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 14:35:07,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 14:35:07,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 14:35:07,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 14:35:07,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 14:35:07,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 14:35:07,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 14:35:07,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 14:35:07,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 14:35:07,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 14:35:07,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 14:35:07,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 14:35:07,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 14:35:07,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 14:35:07,909 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 14:35:07,910 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 14:35:07,910 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 14:35:07,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 14:35:07,910 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 14:35:07,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 14:35:07,911 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 14:35:07,911 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 14:35:07,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 14:35:07,916 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 14:35:07,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 14:35:07,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 14:35:07,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 14:35:07,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 14:35:07,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 14:35:07,917 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 14:35:07,917 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 14:35:07,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:35:07,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 14:35:07,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 14:35:07,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 14:35:07,918 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 14:35:07,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 14:35:07,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 14:35:07,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 14:35:07,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 14:35:08,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 14:35:08,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 14:35:08,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 14:35:08,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 14:35:08,414 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 14:35:08,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/shared_mem2.i [2020-10-28 14:35:08,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb32f41c/473ba28378f84b0fb7e752b26bff3887/FLAG7106fe2c1 [2020-10-28 14:35:09,169 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 14:35:09,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/shared_mem2.i [2020-10-28 14:35:09,184 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb32f41c/473ba28378f84b0fb7e752b26bff3887/FLAG7106fe2c1 [2020-10-28 14:35:09,480 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8eb32f41c/473ba28378f84b0fb7e752b26bff3887 [2020-10-28 14:35:09,485 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 14:35:09,492 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 14:35:09,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 14:35:09,493 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 14:35:09,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 14:35:09,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:35:09" (1/1) ... [2020-10-28 14:35:09,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29815084 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:09, skipping insertion in model container [2020-10-28 14:35:09,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 02:35:09" (1/1) ... [2020-10-28 14:35:09,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 14:35:09,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 14:35:09,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:35:09,937 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 14:35:10,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 14:35:10,071 INFO L208 MainTranslator]: Completed translation [2020-10-28 14:35:10,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10 WrapperNode [2020-10-28 14:35:10,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 14:35:10,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 14:35:10,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 14:35:10,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 14:35:10,087 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (1/1) ... [2020-10-28 14:35:10,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (1/1) ... [2020-10-28 14:35:10,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (1/1) ... [2020-10-28 14:35:10,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (1/1) ... [2020-10-28 14:35:10,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (1/1) ... [2020-10-28 14:35:10,126 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (1/1) ... [2020-10-28 14:35:10,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (1/1) ... [2020-10-28 14:35:10,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 14:35:10,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 14:35:10,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 14:35:10,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 14:35:10,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 14:35:10,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 14:35:10,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 14:35:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 14:35:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-28 14:35:10,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-28 14:35:10,304 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 14:35:10,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 14:35:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 14:35:10,305 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 14:35:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 14:35:10,306 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 14:35:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 14:35:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 14:35:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-28 14:35:10,307 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-28 14:35:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-28 14:35:10,308 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-28 14:35:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-28 14:35:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-28 14:35:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-28 14:35:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-28 14:35:10,309 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-28 14:35:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-28 14:35:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-28 14:35:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-28 14:35:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-28 14:35:10,310 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-28 14:35:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-28 14:35:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-28 14:35:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-28 14:35:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-28 14:35:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-28 14:35:10,311 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-28 14:35:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-28 14:35:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-28 14:35:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-28 14:35:10,312 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-28 14:35:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-28 14:35:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-28 14:35:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-28 14:35:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-28 14:35:10,313 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-28 14:35:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-28 14:35:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-28 14:35:10,314 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-28 14:35:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-28 14:35:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-28 14:35:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-28 14:35:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-28 14:35:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-28 14:35:10,315 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-28 14:35:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-28 14:35:10,316 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-28 14:35:10,317 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-28 14:35:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-28 14:35:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-28 14:35:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-28 14:35:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-28 14:35:10,318 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-28 14:35:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-28 14:35:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-28 14:35:10,319 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-28 14:35:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-28 14:35:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-28 14:35:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-28 14:35:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 14:35:10,320 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-28 14:35:10,321 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-28 14:35:10,321 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-28 14:35:10,321 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-28 14:35:10,321 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-28 14:35:10,322 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-28 14:35:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-28 14:35:10,323 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-28 14:35:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-28 14:35:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-28 14:35:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-28 14:35:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 14:35:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-28 14:35:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-28 14:35:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-28 14:35:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-28 14:35:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-28 14:35:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-28 14:35:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-28 14:35:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-28 14:35:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-28 14:35:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-28 14:35:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-28 14:35:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-28 14:35:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-28 14:35:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-28 14:35:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-28 14:35:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-28 14:35:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-28 14:35:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-28 14:35:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-28 14:35:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-28 14:35:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-28 14:35:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-28 14:35:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-28 14:35:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-28 14:35:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-28 14:35:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-28 14:35:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-28 14:35:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-28 14:35:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-28 14:35:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-28 14:35:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-28 14:35:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-28 14:35:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-28 14:35:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-28 14:35:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-28 14:35:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-28 14:35:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-28 14:35:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-28 14:35:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-28 14:35:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 14:35:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 14:35:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 14:35:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-28 14:35:10,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 14:35:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-28 14:35:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 14:35:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 14:35:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 14:35:10,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 14:35:11,053 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 14:35:11,054 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 14:35:11,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:35:11 BoogieIcfgContainer [2020-10-28 14:35:11,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 14:35:11,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 14:35:11,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 14:35:11,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 14:35:11,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 02:35:09" (1/3) ... [2020-10-28 14:35:11,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69314104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:35:11, skipping insertion in model container [2020-10-28 14:35:11,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 02:35:10" (2/3) ... [2020-10-28 14:35:11,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69314104 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 02:35:11, skipping insertion in model container [2020-10-28 14:35:11,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 02:35:11" (3/3) ... [2020-10-28 14:35:11,065 INFO L111 eAbstractionObserver]: Analyzing ICFG shared_mem2.i [2020-10-28 14:35:11,077 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 14:35:11,083 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 14:35:11,097 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 14:35:11,125 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 14:35:11,125 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 14:35:11,125 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 14:35:11,126 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 14:35:11,126 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 14:35:11,126 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 14:35:11,126 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 14:35:11,126 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 14:35:11,144 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-28 14:35:11,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-28 14:35:11,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:11,151 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:11,151 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:11,158 INFO L82 PathProgramCache]: Analyzing trace with hash 29789142, now seen corresponding path program 1 times [2020-10-28 14:35:11,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:11,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648923439] [2020-10-28 14:35:11,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:11,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:11,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:11,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 14:35:11,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 14:35:11,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-28 14:35:11,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:11,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:11,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 14:35:11,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:11,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 14:35:11,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:11,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:11,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:11,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:11,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:11,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 14:35:11,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:11,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:11,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:11,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 14:35:11,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:11,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648923439] [2020-10-28 14:35:11,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:35:11,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 14:35:11,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198386328] [2020-10-28 14:35:11,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 14:35:11,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:11,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 14:35:11,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:35:11,676 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-28 14:35:11,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:11,804 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-10-28 14:35:11,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 14:35:11,806 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-28 14:35:11,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:11,813 INFO L225 Difference]: With dead ends: 41 [2020-10-28 14:35:11,814 INFO L226 Difference]: Without dead ends: 20 [2020-10-28 14:35:11,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 14:35:11,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-28 14:35:11,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-28 14:35:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-28 14:35:11,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-10-28 14:35:11,855 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 14 [2020-10-28 14:35:11,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:11,856 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-10-28 14:35:11,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 14:35:11,856 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-10-28 14:35:11,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 14:35:11,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:11,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:11,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 14:35:11,857 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:11,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:11,858 INFO L82 PathProgramCache]: Analyzing trace with hash 793715911, now seen corresponding path program 1 times [2020-10-28 14:35:11,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:11,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775277915] [2020-10-28 14:35:11,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:11,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-28 14:35:12,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 14:35:12,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 14:35:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:12,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 14:35:12,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:12,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 14:35:12,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:12,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:12,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:12,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775277915] [2020-10-28 14:35:12,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 14:35:12,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 14:35:12,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086122709] [2020-10-28 14:35:12,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 14:35:12,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:12,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 14:35:12,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 14:35:12,200 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 5 states. [2020-10-28 14:35:12,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:12,331 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-10-28 14:35:12,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 14:35:12,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-28 14:35:12,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:12,333 INFO L225 Difference]: With dead ends: 34 [2020-10-28 14:35:12,333 INFO L226 Difference]: Without dead ends: 28 [2020-10-28 14:35:12,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:35:12,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-28 14:35:12,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-28 14:35:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 14:35:12,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-10-28 14:35:12,341 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-10-28 14:35:12,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:12,342 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-10-28 14:35:12,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 14:35:12,342 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-10-28 14:35:12,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 14:35:12,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:12,343 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:12,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 14:35:12,343 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:12,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:12,344 INFO L82 PathProgramCache]: Analyzing trace with hash 525141040, now seen corresponding path program 1 times [2020-10-28 14:35:12,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:12,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523179389] [2020-10-28 14:35:12,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 14:35:12,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 14:35:12,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 14:35:12,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:12,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 14:35:12,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:12,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:12,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:12,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:12,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 14:35:12,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:12,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:12,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:12,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:12,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523179389] [2020-10-28 14:35:12,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:12,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 14:35:12,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994847295] [2020-10-28 14:35:12,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 14:35:12,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:12,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 14:35:12,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 14:35:12,775 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 6 states. [2020-10-28 14:35:12,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:12,924 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-10-28 14:35:12,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:35:12,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-10-28 14:35:12,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:12,927 INFO L225 Difference]: With dead ends: 42 [2020-10-28 14:35:12,927 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 14:35:12,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:35:12,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 14:35:12,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2020-10-28 14:35:12,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-28 14:35:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2020-10-28 14:35:12,936 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 19 [2020-10-28 14:35:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:12,936 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2020-10-28 14:35:12,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 14:35:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2020-10-28 14:35:12,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 14:35:12,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:12,938 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:12,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 14:35:12,938 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:12,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1951293278, now seen corresponding path program 1 times [2020-10-28 14:35:12,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:12,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1134018444] [2020-10-28 14:35:12,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:12,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:13,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:13,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:13,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 14:35:13,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:35:13,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 748 [2020-10-28 14:35:13,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:13,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 14:35:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:13,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:35:13,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:13,926 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-10-28 14:35:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:14,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:14,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:14,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:14,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:14,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 14:35:14,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:14,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:14,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:14,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:14,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:14,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1134018444] [2020-10-28 14:35:14,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:14,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 14:35:14,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164259601] [2020-10-28 14:35:14,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 14:35:14,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:14,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 14:35:14,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 14:35:14,031 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand 9 states. [2020-10-28 14:35:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:14,225 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-28 14:35:14,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 14:35:14,225 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-28 14:35:14,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:14,227 INFO L225 Difference]: With dead ends: 46 [2020-10-28 14:35:14,227 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 14:35:14,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-10-28 14:35:14,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 14:35:14,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2020-10-28 14:35:14,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-28 14:35:14,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2020-10-28 14:35:14,234 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 20 [2020-10-28 14:35:14,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:14,235 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2020-10-28 14:35:14,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 14:35:14,235 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2020-10-28 14:35:14,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-28 14:35:14,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:14,236 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:14,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 14:35:14,236 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:14,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:14,237 INFO L82 PathProgramCache]: Analyzing trace with hash 935231527, now seen corresponding path program 2 times [2020-10-28 14:35:14,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:14,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210769654] [2020-10-28 14:35:14,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:14,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:14,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 14:35:14,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-28 14:35:14,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:14,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:14,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 14:35:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:14,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 14:35:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:14,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:14,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:14,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:14,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:14,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:14,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:14,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 14:35:14,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:14,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:14,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:14,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:14,616 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:14,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210769654] [2020-10-28 14:35:14,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:14,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 14:35:14,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566820631] [2020-10-28 14:35:14,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 14:35:14,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:14,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 14:35:14,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 14:35:14,618 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand 7 states. [2020-10-28 14:35:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:14,755 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-28 14:35:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 14:35:14,756 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-28 14:35:14,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:14,757 INFO L225 Difference]: With dead ends: 50 [2020-10-28 14:35:14,757 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 14:35:14,757 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 14:35:14,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 14:35:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 32. [2020-10-28 14:35:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 14:35:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-28 14:35:14,768 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 22 [2020-10-28 14:35:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:14,768 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-28 14:35:14,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 14:35:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-28 14:35:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 14:35:14,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:14,769 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:14,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 14:35:14,769 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:14,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:14,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1779196487, now seen corresponding path program 1 times [2020-10-28 14:35:14,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:14,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197090115] [2020-10-28 14:35:14,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:14,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:15,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:16,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:16,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 14:35:16,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 14:35:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-10-28 14:35:16,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:16,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 14:35:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 14:35:16,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:16,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:16,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:16,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:16,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 14:35:16,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:16,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:16,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:16,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:16,543 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197090115] [2020-10-28 14:35:16,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:16,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 14:35:16,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887132391] [2020-10-28 14:35:16,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 14:35:16,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:16,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 14:35:16,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-28 14:35:16,545 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 10 states. [2020-10-28 14:35:16,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:16,849 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-10-28 14:35:16,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 14:35:16,849 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-10-28 14:35:16,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:16,850 INFO L225 Difference]: With dead ends: 46 [2020-10-28 14:35:16,850 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 14:35:16,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-28 14:35:16,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 14:35:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2020-10-28 14:35:16,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 14:35:16,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-10-28 14:35:16,856 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 23 [2020-10-28 14:35:16,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:16,857 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-10-28 14:35:16,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 14:35:16,857 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-10-28 14:35:16,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-28 14:35:16,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:16,858 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:16,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 14:35:16,858 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:16,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:16,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1534097013, now seen corresponding path program 2 times [2020-10-28 14:35:16,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:16,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650498756] [2020-10-28 14:35:16,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:16,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:17,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:19,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:19,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 14:35:19,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:35:19,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2868 [2020-10-28 14:35:19,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:19,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 14:35:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 14:35:19,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:20,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:20,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:20,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:20,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 14:35:20,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:20,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:20,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:20,223 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 14:35:20,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650498756] [2020-10-28 14:35:20,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:20,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:35:20,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562270615] [2020-10-28 14:35:20,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:35:20,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:20,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:35:20,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:35:20,227 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 11 states. [2020-10-28 14:35:20,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:20,908 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2020-10-28 14:35:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 14:35:20,910 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-28 14:35:20,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:20,911 INFO L225 Difference]: With dead ends: 58 [2020-10-28 14:35:20,911 INFO L226 Difference]: Without dead ends: 52 [2020-10-28 14:35:20,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-28 14:35:20,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-28 14:35:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 35. [2020-10-28 14:35:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-28 14:35:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-10-28 14:35:20,926 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 24 [2020-10-28 14:35:20,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:20,927 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-10-28 14:35:20,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:35:20,927 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-10-28 14:35:20,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 14:35:20,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 14:35:20,928 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 14:35:20,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 14:35:20,928 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 14:35:20,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 14:35:20,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1798364382, now seen corresponding path program 2 times [2020-10-28 14:35:20,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 14:35:20,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623854878] [2020-10-28 14:35:20,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 14:35:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:21,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:21,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:21,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:22,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:25,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:25,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 14:35:25,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 14:35:25,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4349 [2020-10-28 14:35:25,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:25,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 14:35:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 14:35:25,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 14:35:25,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 14:35:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 14:35:25,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 14:35:25,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 14:35:25,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 14:35:25,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 14:35:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 14:35:25,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 14:35:25,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 14:35:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 14:35:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 14:35:25,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 14:35:25,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 14:35:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 14:35:25,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623854878] [2020-10-28 14:35:25,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 14:35:25,683 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 14:35:25,683 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174585052] [2020-10-28 14:35:25,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 14:35:25,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 14:35:25,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 14:35:25,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 14:35:25,692 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand 11 states. [2020-10-28 14:35:26,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 14:35:26,103 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-10-28 14:35:26,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 14:35:26,104 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-10-28 14:35:26,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 14:35:26,104 INFO L225 Difference]: With dead ends: 39 [2020-10-28 14:35:26,104 INFO L226 Difference]: Without dead ends: 0 [2020-10-28 14:35:26,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-28 14:35:26,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-28 14:35:26,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-28 14:35:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-28 14:35:26,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-28 14:35:26,106 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-10-28 14:35:26,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 14:35:26,107 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-28 14:35:26,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 14:35:26,107 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-28 14:35:26,107 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-28 14:35:26,107 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 14:35:26,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-28 14:35:26,251 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 13) no Hoare annotation was computed. [2020-10-28 14:35:26,251 INFO L274 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-10-28 14:35:26,251 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 13) the Hoare annotation is: true [2020-10-28 14:35:26,251 INFO L274 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-10-28 14:35:26,251 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-10-28 14:35:26,252 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:35:26,252 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-28 14:35:26,252 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:35:26,252 INFO L274 CegarLoopResult]: For program point __bswap_32ENTRY(lines 75 79) no Hoare annotation was computed. [2020-10-28 14:35:26,252 INFO L274 CegarLoopResult]: For program point __bswap_32FINAL(lines 75 79) no Hoare annotation was computed. [2020-10-28 14:35:26,252 INFO L274 CegarLoopResult]: For program point __bswap_32EXIT(lines 75 79) no Hoare annotation was computed. [2020-10-28 14:35:26,252 INFO L274 CegarLoopResult]: For program point __bswap_64ENTRY(lines 80 84) no Hoare annotation was computed. [2020-10-28 14:35:26,252 INFO L274 CegarLoopResult]: For program point __bswap_64FINAL(lines 80 84) no Hoare annotation was computed. [2020-10-28 14:35:26,253 INFO L274 CegarLoopResult]: For program point __bswap_64EXIT(lines 80 84) no Hoare annotation was computed. [2020-10-28 14:35:26,253 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-28 14:35:26,253 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-28 14:35:26,253 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-28 14:35:26,253 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-28 14:35:26,253 INFO L270 CegarLoopResult]: At program point L601(line 601) the Hoare annotation is: false [2020-10-28 14:35:26,253 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 576 602) no Hoare annotation was computed. [2020-10-28 14:35:26,253 INFO L274 CegarLoopResult]: For program point L595-1(lines 595 599) no Hoare annotation was computed. [2020-10-28 14:35:26,253 INFO L270 CegarLoopResult]: At program point L595-3(lines 595 599) the Hoare annotation is: (<= (select (select |#memory_int| main_~m~0.base) main_~m~0.offset) 100) [2020-10-28 14:35:26,254 INFO L274 CegarLoopResult]: For program point L595-4(lines 595 599) no Hoare annotation was computed. [2020-10-28 14:35:26,254 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 576 602) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-28 14:35:26,254 INFO L274 CegarLoopResult]: For program point L600(lines 600 601) no Hoare annotation was computed. [2020-10-28 14:35:26,254 INFO L274 CegarLoopResult]: For program point L600-1(lines 576 602) no Hoare annotation was computed. [2020-10-28 14:35:26,254 INFO L274 CegarLoopResult]: For program point L596(lines 596 597) no Hoare annotation was computed. [2020-10-28 14:35:26,254 INFO L274 CegarLoopResult]: For program point L596-2(lines 596 597) no Hoare annotation was computed. [2020-10-28 14:35:26,254 INFO L274 CegarLoopResult]: For program point L586(lines 586 592) no Hoare annotation was computed. [2020-10-28 14:35:26,254 INFO L270 CegarLoopResult]: At program point L586-2(lines 584 593) the Hoare annotation is: (and (not (= main_~m~0.base main_~list~0.base)) (= (select |#valid| main_~m~0.base) 1) (= (select (select |#memory_int| main_~m~0.base) main_~m~0.offset) 0)) [2020-10-28 14:35:26,254 INFO L274 CegarLoopResult]: For program point L584-1(lines 584 593) no Hoare annotation was computed. [2020-10-28 14:35:26,255 INFO L274 CegarLoopResult]: For program point L584-3(lines 584 593) no Hoare annotation was computed. [2020-10-28 14:35:26,265 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:35:26,271 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:35:26,273 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:35:26,274 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:35:26,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 02:35:26 BoogieIcfgContainer [2020-10-28 14:35:26,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-28 14:35:26,285 INFO L168 Benchmark]: Toolchain (without parser) took 16790.98 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 126.1 MB in the beginning and 280.2 MB in the end (delta: -154.2 MB). Peak memory consumption was 72.5 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:26,286 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.4 MB in the end (delta: 71.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-28 14:35:26,287 INFO L168 Benchmark]: CACSL2BoogieTranslator took 579.35 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 104.2 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:26,288 INFO L168 Benchmark]: Boogie Preprocessor took 72.57 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 101.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:26,289 INFO L168 Benchmark]: RCFGBuilder took 908.96 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 94.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:26,292 INFO L168 Benchmark]: TraceAbstraction took 15218.98 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 93.9 MB in the beginning and 280.2 MB in the end (delta: -186.3 MB). Peak memory consumption was 41.0 MB. Max. memory is 8.0 GB. [2020-10-28 14:35:26,301 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.4 MB in the end (delta: 71.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 579.35 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 104.2 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 72.57 ms. Allocated memory is still 151.0 MB. Free memory was 104.2 MB in the beginning and 101.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 908.96 ms. Allocated memory is still 151.0 MB. Free memory was 101.3 MB in the beginning and 94.3 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15218.98 ms. Allocated memory was 151.0 MB in the beginning and 377.5 MB in the end (delta: 226.5 MB). Free memory was 93.9 MB in the beginning and 280.2 MB in the end (delta: -186.3 MB). Peak memory consumption was 41.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 595]: Loop Invariant [2020-10-28 14:35:26,315 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:35:26,316 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: unknown-#memory_int-unknown[m][m] <= 100 - InvariantResult [Line: 584]: Loop Invariant [2020-10-28 14:35:26,316 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-28 14:35:26,317 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (!(m == list) && \valid[m] == 1) && unknown-#memory_int-unknown[m][m] == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 126 SDtfs, 76 SDslu, 378 SDs, 0 SdLazy, 529 SolverSat, 52 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 21 NumberOfFragments, 60 HoareAnnotationTreeSize, 15 FomulaSimplifications, 1460 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 26 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 44440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 2/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...