/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/discover_list.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 12:50:43,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 12:50:43,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 12:50:43,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 12:50:43,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 12:50:43,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 12:50:43,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 12:50:43,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 12:50:43,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 12:50:43,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 12:50:43,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 12:50:43,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 12:50:43,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 12:50:43,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 12:50:43,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 12:50:43,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 12:50:43,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 12:50:43,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 12:50:43,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 12:50:43,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 12:50:43,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 12:50:43,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 12:50:43,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 12:50:43,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 12:50:43,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 12:50:43,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 12:50:43,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 12:50:43,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 12:50:43,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 12:50:43,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-05-02 12:50:44,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 12:50:44,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 12:50:44,004 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 12:50:44,007 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 12:50:44,031 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 12:50:44,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 12:50:44,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 12:50:44,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 12:50:44,034 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 12:50:44,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 12:50:44,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 12:50:44,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 12:50:44,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 12:50:44,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 12:50:44,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 12:50:44,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 12:50:44,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 12:50:44,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 12:50:44,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 12:50:44,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 12:50:44,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 12:50:44,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 12:50:44,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 12:50:44,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 12:50:44,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 12:50:44,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 12:50:44,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 12:50:44,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 12:50:44,038 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 12:50:44,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 12:50:44,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 12:50:44,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 12:50:44,038 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 12:50:44,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 12:50:44,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 12:50:44,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 12:50:44,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 12:50:44,302 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 12:50:44,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/discover_list.c [2021-05-02 12:50:44,356 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360350344/6d74e392656c408fa0afb35cd1761877/FLAG198b22ebc [2021-05-02 12:50:44,762 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 12:50:44,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/discover_list.c [2021-05-02 12:50:44,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360350344/6d74e392656c408fa0afb35cd1761877/FLAG198b22ebc [2021-05-02 12:50:45,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360350344/6d74e392656c408fa0afb35cd1761877 [2021-05-02 12:50:45,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 12:50:45,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 12:50:45,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 12:50:45,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 12:50:45,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 12:50:45,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a520776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45, skipping insertion in model container [2021-05-02 12:50:45,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 12:50:45,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 12:50:45,354 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/discover_list.c[4997,5010] [2021-05-02 12:50:45,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:50:45,428 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 12:50:45,446 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/discover_list.c[4997,5010] [2021-05-02 12:50:45,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 12:50:45,524 INFO L208 MainTranslator]: Completed translation [2021-05-02 12:50:45,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45 WrapperNode [2021-05-02 12:50:45,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 12:50:45,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 12:50:45,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 12:50:45,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 12:50:45,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,557 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (1/1) ... [2021-05-02 12:50:45,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 12:50:45,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 12:50:45,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 12:50:45,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 12:50:45,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-05-02 12:50:45,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 12:50:45,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 12:50:45,722 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 12:50:45,723 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 12:50:45,723 INFO L138 BoogieDeclarations]: Found implementation of procedure smp_get_func_def_resp_len [2021-05-02 12:50:45,723 INFO L138 BoogieDeclarations]: Found implementation of procedure smp_is_naa5 [2021-05-02 12:50:45,723 INFO L138 BoogieDeclarations]: Found implementation of procedure dStrHex [2021-05-02 12:50:45,723 INFO L138 BoogieDeclarations]: Found implementation of procedure smp_get_num [2021-05-02 12:50:45,724 INFO L138 BoogieDeclarations]: Found implementation of procedure smp_get_llnum [2021-05-02 12:50:45,724 INFO L138 BoogieDeclarations]: Found implementation of procedure do_discover_list [2021-05-02 12:50:45,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 12:50:45,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-05-02 12:50:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 12:50:45,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 12:50:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 12:50:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 12:50:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-05-02 12:50:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 12:50:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-05-02 12:50:45,726 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure getopt_long [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure smp_initiator_open [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure smp_send_req [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure smp_get_func_def_resp_len [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure smp_is_naa5 [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure dStrHex [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure smp_get_num [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure smp_get_llnum [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure do_discover_list [2021-05-02 12:50:45,727 INFO L130 BoogieDeclarations]: Found specification of procedure main6 [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure toupper [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 12:50:45,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 12:50:46,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 12:50:46,814 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 12:50:46,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:50:46 BoogieIcfgContainer [2021-05-02 12:50:46,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 12:50:46,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 12:50:46,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 12:50:46,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 12:50:46,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 12:50:45" (1/3) ... [2021-05-02 12:50:46,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3e68a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:50:46, skipping insertion in model container [2021-05-02 12:50:46,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 12:50:45" (2/3) ... [2021-05-02 12:50:46,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3e68a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 12:50:46, skipping insertion in model container [2021-05-02 12:50:46,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 12:50:46" (3/3) ... [2021-05-02 12:50:46,822 INFO L111 eAbstractionObserver]: Analyzing ICFG discover_list.c [2021-05-02 12:50:46,826 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 12:50:46,830 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 12:50:46,843 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 12:50:46,866 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 12:50:46,866 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 12:50:46,866 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 12:50:46,866 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 12:50:46,866 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 12:50:46,867 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 12:50:46,867 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 12:50:46,867 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 12:50:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 69 states have (on average 1.4927536231884058) internal successors, (103), 71 states have internal predecessors, (103), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 12:50:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-02 12:50:46,889 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:46,890 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:46,890 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:46,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:46,894 INFO L82 PathProgramCache]: Analyzing trace with hash 467458188, now seen corresponding path program 1 times [2021-05-02 12:50:46,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:46,899 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454752259] [2021-05-02 12:50:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:47,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:47,293 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-02 12:50:47,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:47,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:47,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:50:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:47,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-05-02 12:50:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:50:47,360 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:47,360 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454752259] [2021-05-02 12:50:47,361 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454752259] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:50:47,361 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 12:50:47,362 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 12:50:47,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873540849] [2021-05-02 12:50:47,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 12:50:47,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:47,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 12:50:47,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 12:50:47,381 INFO L87 Difference]: Start difference. First operand has 91 states, 69 states have (on average 1.4927536231884058) internal successors, (103), 71 states have internal predecessors, (103), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 12:50:47,507 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:50:47,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:47,999 INFO L93 Difference]: Finished difference Result 205 states and 313 transitions. [2021-05-02 12:50:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 12:50:48,000 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2021-05-02 12:50:48,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:48,007 INFO L225 Difference]: With dead ends: 205 [2021-05-02 12:50:48,007 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 12:50:48,009 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 266.7ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 12:50:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 12:50:48,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 76. [2021-05-02 12:50:48,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 58 states have (on average 1.293103448275862) internal successors, (75), 58 states have internal predecessors, (75), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:50:48,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-05-02 12:50:48,043 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 46 [2021-05-02 12:50:48,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:48,044 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-05-02 12:50:48,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 12:50:48,044 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-05-02 12:50:48,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-05-02 12:50:48,046 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:48,046 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:48,046 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 12:50:48,046 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:48,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:48,047 INFO L82 PathProgramCache]: Analyzing trace with hash -1776525110, now seen corresponding path program 1 times [2021-05-02 12:50:48,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:48,047 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573933541] [2021-05-02 12:50:48,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:48,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:48,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:48,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:50:48,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:48,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-05-02 12:50:48,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:48,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 12:50:48,233 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:48,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573933541] [2021-05-02 12:50:48,233 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573933541] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:48,233 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914861962] [2021-05-02 12:50:48,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:48,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 859 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 12:50:48,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:48,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 12:50:48,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914861962] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 12:50:48,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-05-02 12:50:48,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-05-02 12:50:48,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031956880] [2021-05-02 12:50:48,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 12:50:48,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:48,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 12:50:48,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 12:50:48,533 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 12:50:48,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:48,608 INFO L93 Difference]: Finished difference Result 136 states and 178 transitions. [2021-05-02 12:50:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 12:50:48,609 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 46 [2021-05-02 12:50:48,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:48,610 INFO L225 Difference]: With dead ends: 136 [2021-05-02 12:50:48,610 INFO L226 Difference]: Without dead ends: 77 [2021-05-02 12:50:48,611 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 119.8ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:50:48,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2021-05-02 12:50:48,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2021-05-02 12:50:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 59 states have (on average 1.2881355932203389) internal successors, (76), 59 states have internal predecessors, (76), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:50:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2021-05-02 12:50:48,620 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 46 [2021-05-02 12:50:48,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:48,620 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2021-05-02 12:50:48,620 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-02 12:50:48,620 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2021-05-02 12:50:48,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-05-02 12:50:48,621 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:48,621 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:48,845 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 12:50:48,845 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:48,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:48,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1831279328, now seen corresponding path program 1 times [2021-05-02 12:50:48,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:48,846 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849051962] [2021-05-02 12:50:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:49,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:49,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:49,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:50:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:49,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-05-02 12:50:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-02 12:50:49,081 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:49,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849051962] [2021-05-02 12:50:49,081 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849051962] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:49,081 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844196459] [2021-05-02 12:50:49,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:49,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:49,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 867 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 12:50:49,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:49,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:49,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:49,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:49,347 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 12:50:49,348 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844196459] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:49,348 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:49,348 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 7 [2021-05-02 12:50:49,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169950072] [2021-05-02 12:50:49,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 12:50:49,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:49,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 12:50:49,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 12:50:49,349 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:50:50,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:50,046 INFO L93 Difference]: Finished difference Result 138 states and 180 transitions. [2021-05-02 12:50:50,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 12:50:50,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 48 [2021-05-02 12:50:50,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:50,047 INFO L225 Difference]: With dead ends: 138 [2021-05-02 12:50:50,047 INFO L226 Difference]: Without dead ends: 78 [2021-05-02 12:50:50,048 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 483.4ms TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:50:50,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-05-02 12:50:50,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2021-05-02 12:50:50,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 60 states have (on average 1.2833333333333334) internal successors, (77), 60 states have internal predecessors, (77), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:50:50,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2021-05-02 12:50:50,055 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 48 [2021-05-02 12:50:50,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:50,055 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2021-05-02 12:50:50,055 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:50:50,055 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2021-05-02 12:50:50,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 12:50:50,056 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:50,056 INFO L523 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:50,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:50,273 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:50,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:50,274 INFO L82 PathProgramCache]: Analyzing trace with hash -110265974, now seen corresponding path program 2 times [2021-05-02 12:50:50,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:50,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846718308] [2021-05-02 12:50:50,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:50,453 WARN L205 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-02 12:50:50,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:50,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:50,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:50:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:50,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-05-02 12:50:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:50:50,496 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:50,496 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846718308] [2021-05-02 12:50:50,497 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846718308] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:50,497 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349502470] [2021-05-02 12:50:50,497 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:51,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:50:51,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:51,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 875 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 12:50:51,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:51,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-02 12:50:51,630 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349502470] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:51,630 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:51,630 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 8 [2021-05-02 12:50:51,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772486239] [2021-05-02 12:50:51,631 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 12:50:51,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:51,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 12:50:51,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-05-02 12:50:51,632 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:50:51,776 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:50:52,017 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-02 12:50:52,207 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:50:52,611 WARN L205 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:50:52,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:52,927 INFO L93 Difference]: Finished difference Result 140 states and 182 transitions. [2021-05-02 12:50:52,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 12:50:52,927 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2021-05-02 12:50:52,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:52,928 INFO L225 Difference]: With dead ends: 140 [2021-05-02 12:50:52,928 INFO L226 Difference]: Without dead ends: 79 [2021-05-02 12:50:52,929 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1079.9ms TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-05-02 12:50:52,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-05-02 12:50:52,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2021-05-02 12:50:52,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 61 states have (on average 1.278688524590164) internal successors, (78), 61 states have internal predecessors, (78), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:50:52,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2021-05-02 12:50:52,938 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 50 [2021-05-02 12:50:52,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:52,938 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2021-05-02 12:50:52,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:50:52,939 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2021-05-02 12:50:52,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-02 12:50:52,939 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:52,939 INFO L523 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:53,145 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:53,146 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:53,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:53,146 INFO L82 PathProgramCache]: Analyzing trace with hash -523287008, now seen corresponding path program 3 times [2021-05-02 12:50:53,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:53,146 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244450005] [2021-05-02 12:50:53,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:53,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:53,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:50:53,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:53,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-05-02 12:50:53,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:53,332 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-02 12:50:53,333 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:53,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244450005] [2021-05-02 12:50:53,333 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244450005] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:53,333 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159377232] [2021-05-02 12:50:53,333 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:55,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 12:50:55,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:55,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 879 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 12:50:55,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:55,675 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:55,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:55,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:55,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:55,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:55,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:55,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-05-02 12:50:55,708 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159377232] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:55,708 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:55,708 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 9 [2021-05-02 12:50:55,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26715865] [2021-05-02 12:50:55,710 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 12:50:55,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:55,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 12:50:55,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-05-02 12:50:55,711 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:50:56,265 WARN L205 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:50:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:56,564 INFO L93 Difference]: Finished difference Result 142 states and 184 transitions. [2021-05-02 12:50:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 12:50:56,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 52 [2021-05-02 12:50:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:56,565 INFO L225 Difference]: With dead ends: 142 [2021-05-02 12:50:56,565 INFO L226 Difference]: Without dead ends: 80 [2021-05-02 12:50:56,566 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 662.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-05-02 12:50:56,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-05-02 12:50:56,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-05-02 12:50:56,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 62 states have (on average 1.2741935483870968) internal successors, (79), 62 states have internal predecessors, (79), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:50:56,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2021-05-02 12:50:56,575 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 52 [2021-05-02 12:50:56,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:56,576 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2021-05-02 12:50:56,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:50:56,576 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2021-05-02 12:50:56,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-02 12:50:56,576 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:56,576 INFO L523 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:56,793 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:56,793 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:56,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:56,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1966742966, now seen corresponding path program 4 times [2021-05-02 12:50:56,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:56,794 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687900088] [2021-05-02 12:50:56,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:57,025 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-02 12:50:57,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:57,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:50:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:57,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-05-02 12:50:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:57,472 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-05-02 12:50:57,472 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:57,472 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687900088] [2021-05-02 12:50:57,473 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687900088] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:57,473 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008605811] [2021-05-02 12:50:57,473 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:57,684 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:50:57,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:57,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 891 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 12:50:57,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:57,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-05-02 12:50:57,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008605811] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:57,782 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:57,782 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 10 [2021-05-02 12:50:57,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174584644] [2021-05-02 12:50:57,783 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 12:50:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 12:50:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-05-02 12:50:57,789 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:50:58,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:50:58,755 INFO L93 Difference]: Finished difference Result 144 states and 186 transitions. [2021-05-02 12:50:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 12:50:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2021-05-02 12:50:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:50:58,756 INFO L225 Difference]: With dead ends: 144 [2021-05-02 12:50:58,757 INFO L226 Difference]: Without dead ends: 81 [2021-05-02 12:50:58,757 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1060.2ms TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-05-02 12:50:58,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-05-02 12:50:58,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2021-05-02 12:50:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 63 states have (on average 1.2698412698412698) internal successors, (80), 63 states have internal predecessors, (80), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:50:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2021-05-02 12:50:58,764 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 54 [2021-05-02 12:50:58,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:50:58,764 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2021-05-02 12:50:58,764 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:50:58,764 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2021-05-02 12:50:58,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-05-02 12:50:58,765 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:50:58,765 INFO L523 BasicCegarLoop]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:50:58,965 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 12:50:58,965 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:50:58,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:50:58,966 INFO L82 PathProgramCache]: Analyzing trace with hash -127655584, now seen corresponding path program 5 times [2021-05-02 12:50:58,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:50:58,966 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18325150] [2021-05-02 12:50:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:50:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:59,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:50:59,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:59,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:50:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-05-02 12:50:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:50:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-05-02 12:50:59,171 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:50:59,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18325150] [2021-05-02 12:50:59,171 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18325150] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:59,171 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305906093] [2021-05-02 12:50:59,171 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:50:59,386 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-05-02 12:50:59,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:50:59,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 899 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 12:50:59,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:50:59,419 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,420 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,438 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:50:59,464 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 39 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-05-02 12:50:59,464 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305906093] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:50:59,464 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:50:59,464 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 11 [2021-05-02 12:50:59,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291929455] [2021-05-02 12:50:59,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 12:50:59,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:50:59,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 12:50:59,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-05-02 12:50:59,465 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:50:59,978 WARN L205 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:51:00,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:00,586 INFO L93 Difference]: Finished difference Result 146 states and 188 transitions. [2021-05-02 12:51:00,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 12:51:00,586 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-05-02 12:51:00,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:00,588 INFO L225 Difference]: With dead ends: 146 [2021-05-02 12:51:00,588 INFO L226 Difference]: Without dead ends: 82 [2021-05-02 12:51:00,588 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 871.1ms TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-05-02 12:51:00,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-05-02 12:51:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2021-05-02 12:51:00,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 64 states have (on average 1.265625) internal successors, (81), 64 states have internal predecessors, (81), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:00,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 104 transitions. [2021-05-02 12:51:00,604 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 104 transitions. Word has length 56 [2021-05-02 12:51:00,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:00,605 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 104 transitions. [2021-05-02 12:51:00,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 9 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:00,605 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 104 transitions. [2021-05-02 12:51:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-02 12:51:00,609 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:00,609 INFO L523 BasicCegarLoop]: trace histogram [12, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:00,825 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:00,825 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:00,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:00,825 INFO L82 PathProgramCache]: Analyzing trace with hash -330196214, now seen corresponding path program 6 times [2021-05-02 12:51:00,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:00,825 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651252275] [2021-05-02 12:51:00,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:00,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:00,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:00,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:01,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-05-02 12:51:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:01,052 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-05-02 12:51:01,052 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:01,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651252275] [2021-05-02 12:51:01,052 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651252275] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:01,052 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983504924] [2021-05-02 12:51:01,052 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:03,943 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-02 12:51:03,943 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:03,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 12:51:03,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:03,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:03,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:04,039 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 52 proven. 21 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-05-02 12:51:04,040 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983504924] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:04,040 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:04,040 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 12 [2021-05-02 12:51:04,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939025058] [2021-05-02 12:51:04,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 12:51:04,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:04,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 12:51:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-05-02 12:51:04,041 INFO L87 Difference]: Start difference. First operand 82 states and 104 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:04,593 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:51:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:05,258 INFO L93 Difference]: Finished difference Result 148 states and 190 transitions. [2021-05-02 12:51:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 12:51:05,259 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2021-05-02 12:51:05,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:05,265 INFO L225 Difference]: With dead ends: 148 [2021-05-02 12:51:05,265 INFO L226 Difference]: Without dead ends: 83 [2021-05-02 12:51:05,270 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 996.5ms TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-05-02 12:51:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-05-02 12:51:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-05-02 12:51:05,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 65 states have internal predecessors, (82), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:05,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 105 transitions. [2021-05-02 12:51:05,293 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 105 transitions. Word has length 58 [2021-05-02 12:51:05,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:05,293 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 105 transitions. [2021-05-02 12:51:05,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 10 states have internal predecessors, (49), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:05,293 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 105 transitions. [2021-05-02 12:51:05,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-02 12:51:05,294 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:05,294 INFO L523 BasicCegarLoop]: trace histogram [14, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:05,513 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:05,513 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:05,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:05,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1036407648, now seen corresponding path program 7 times [2021-05-02 12:51:05,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:05,514 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086098708] [2021-05-02 12:51:05,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:05,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:05,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-05-02 12:51:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 94 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-05-02 12:51:05,765 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:05,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086098708] [2021-05-02 12:51:05,765 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086098708] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:05,765 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199541293] [2021-05-02 12:51:05,765 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:05,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 12:51:05,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:05,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:05,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:06,016 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-05-02 12:51:06,017 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199541293] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:06,017 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:06,017 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 13 [2021-05-02 12:51:06,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911879102] [2021-05-02 12:51:06,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-05-02 12:51:06,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:06,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-05-02 12:51:06,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-05-02 12:51:06,020 INFO L87 Difference]: Start difference. First operand 83 states and 105 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:06,944 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:51:07,064 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:51:07,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:07,417 INFO L93 Difference]: Finished difference Result 150 states and 192 transitions. [2021-05-02 12:51:07,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 12:51:07,423 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 60 [2021-05-02 12:51:07,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:07,424 INFO L225 Difference]: With dead ends: 150 [2021-05-02 12:51:07,424 INFO L226 Difference]: Without dead ends: 84 [2021-05-02 12:51:07,424 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1115.2ms TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2021-05-02 12:51:07,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-05-02 12:51:07,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2021-05-02 12:51:07,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 66 states have internal predecessors, (83), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:07,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 106 transitions. [2021-05-02 12:51:07,430 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 106 transitions. Word has length 60 [2021-05-02 12:51:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:07,430 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 106 transitions. [2021-05-02 12:51:07,430 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 106 transitions. [2021-05-02 12:51:07,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-05-02 12:51:07,431 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:07,431 INFO L523 BasicCegarLoop]: trace histogram [16, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:07,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 12:51:07,641 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:07,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:07,641 INFO L82 PathProgramCache]: Analyzing trace with hash -2059623478, now seen corresponding path program 8 times [2021-05-02 12:51:07,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:07,642 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901809134] [2021-05-02 12:51:07,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:07,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:07,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:07,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:07,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-05-02 12:51:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-05-02 12:51:07,871 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:07,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901809134] [2021-05-02 12:51:07,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901809134] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:07,871 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193973284] [2021-05-02 12:51:07,871 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:08,840 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:51:08,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:08,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 923 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 12:51:08,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:08,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,904 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,916 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 84 proven. 36 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 12:51:08,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193973284] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:08,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:08,949 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 14 [2021-05-02 12:51:08,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680870331] [2021-05-02 12:51:08,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 12:51:08,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:08,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 12:51:08,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-05-02 12:51:08,950 INFO L87 Difference]: Start difference. First operand 84 states and 106 transitions. Second operand has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:10,347 INFO L93 Difference]: Finished difference Result 152 states and 194 transitions. [2021-05-02 12:51:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 12:51:10,347 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 62 [2021-05-02 12:51:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:10,348 INFO L225 Difference]: With dead ends: 152 [2021-05-02 12:51:10,348 INFO L226 Difference]: Without dead ends: 85 [2021-05-02 12:51:10,349 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1118.6ms TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2021-05-02 12:51:10,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-05-02 12:51:10,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2021-05-02 12:51:10,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 67 states have (on average 1.2537313432835822) internal successors, (84), 67 states have internal predecessors, (84), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:10,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 107 transitions. [2021-05-02 12:51:10,355 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 107 transitions. Word has length 62 [2021-05-02 12:51:10,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:10,355 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 107 transitions. [2021-05-02 12:51:10,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 12 states have internal predecessors, (51), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:10,356 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 107 transitions. [2021-05-02 12:51:10,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-05-02 12:51:10,356 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:10,356 INFO L523 BasicCegarLoop]: trace histogram [18, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:10,556 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:10,557 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:10,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1482430496, now seen corresponding path program 9 times [2021-05-02 12:51:10,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:10,557 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368016999] [2021-05-02 12:51:10,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:10,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:10,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-05-02 12:51:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:10,751 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-05-02 12:51:10,752 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:10,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368016999] [2021-05-02 12:51:10,752 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368016999] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:10,752 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400870829] [2021-05-02 12:51:10,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:14,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-05-02 12:51:14,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:14,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 12 conjunts are in the unsatisfiable core [2021-05-02 12:51:14,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:14,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,933 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 102 proven. 45 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-05-02 12:51:14,948 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400870829] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:14,948 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:14,948 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 15 [2021-05-02 12:51:14,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916157684] [2021-05-02 12:51:14,949 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 12:51:14,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:14,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 12:51:14,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-05-02 12:51:14,950 INFO L87 Difference]: Start difference. First operand 85 states and 107 transitions. Second operand has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:51:16,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:16,511 INFO L93 Difference]: Finished difference Result 154 states and 196 transitions. [2021-05-02 12:51:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 12:51:16,511 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2021-05-02 12:51:16,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:16,512 INFO L225 Difference]: With dead ends: 154 [2021-05-02 12:51:16,512 INFO L226 Difference]: Without dead ends: 86 [2021-05-02 12:51:16,513 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1243.1ms TimeCoverageRelationStatistics Valid=214, Invalid=488, Unknown=0, NotChecked=0, Total=702 [2021-05-02 12:51:16,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-05-02 12:51:16,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-05-02 12:51:16,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.25) internal successors, (85), 68 states have internal predecessors, (85), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:16,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2021-05-02 12:51:16,521 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 64 [2021-05-02 12:51:16,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:16,521 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2021-05-02 12:51:16,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 4.133333333333334) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:51:16,522 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2021-05-02 12:51:16,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-05-02 12:51:16,523 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:16,523 INFO L523 BasicCegarLoop]: trace histogram [20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:16,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:16,737 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:16,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1102249098, now seen corresponding path program 10 times [2021-05-02 12:51:16,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:16,738 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569808858] [2021-05-02 12:51:16,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:16,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:16,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:16,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-05-02 12:51:16,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:16,966 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 178 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-05-02 12:51:16,967 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:16,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569808858] [2021-05-02 12:51:16,967 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569808858] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:16,967 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653676673] [2021-05-02 12:51:16,967 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:17,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:51:17,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:17,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-02 12:51:17,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:17,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,648 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,649 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,656 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,661 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 124 proven. 55 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-05-02 12:51:17,695 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653676673] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:17,695 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:17,695 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 16 [2021-05-02 12:51:17,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793935545] [2021-05-02 12:51:17,696 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 12:51:17,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:17,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 12:51:17,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2021-05-02 12:51:17,696 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:19,511 INFO L93 Difference]: Finished difference Result 156 states and 198 transitions. [2021-05-02 12:51:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-02 12:51:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2021-05-02 12:51:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:19,512 INFO L225 Difference]: With dead ends: 156 [2021-05-02 12:51:19,512 INFO L226 Difference]: Without dead ends: 87 [2021-05-02 12:51:19,513 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1340.2ms TimeCoverageRelationStatistics Valid=250, Invalid=562, Unknown=0, NotChecked=0, Total=812 [2021-05-02 12:51:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-05-02 12:51:19,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-05-02 12:51:19,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 69 states have internal predecessors, (86), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2021-05-02 12:51:19,519 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 66 [2021-05-02 12:51:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:19,519 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2021-05-02 12:51:19,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 14 states have internal predecessors, (53), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:19,519 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2021-05-02 12:51:19,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-05-02 12:51:19,520 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:19,520 INFO L523 BasicCegarLoop]: trace histogram [22, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:19,733 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 12:51:19,733 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:19,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:19,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1393110240, now seen corresponding path program 11 times [2021-05-02 12:51:19,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:19,733 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108346369] [2021-05-02 12:51:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:19,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:19,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:19,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-05-02 12:51:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:19,994 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-05-02 12:51:19,995 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:19,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108346369] [2021-05-02 12:51:19,995 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108346369] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:19,995 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476275352] [2021-05-02 12:51:19,995 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:20,575 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-05-02 12:51:20,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:20,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 14 conjunts are in the unsatisfiable core [2021-05-02 12:51:20,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:20,607 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,608 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,624 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,625 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 147 proven. 66 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-05-02 12:51:20,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476275352] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:20,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:20,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 17 [2021-05-02 12:51:20,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587434076] [2021-05-02 12:51:20,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 12:51:20,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:20,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 12:51:20,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2021-05-02 12:51:20,672 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:22,550 INFO L93 Difference]: Finished difference Result 158 states and 200 transitions. [2021-05-02 12:51:22,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 12:51:22,551 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2021-05-02 12:51:22,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:22,552 INFO L225 Difference]: With dead ends: 158 [2021-05-02 12:51:22,552 INFO L226 Difference]: Without dead ends: 88 [2021-05-02 12:51:22,552 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1478.6ms TimeCoverageRelationStatistics Valid=289, Invalid=641, Unknown=0, NotChecked=0, Total=930 [2021-05-02 12:51:22,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-05-02 12:51:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-05-02 12:51:22,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 70 states have internal predecessors, (87), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 110 transitions. [2021-05-02 12:51:22,558 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 110 transitions. Word has length 68 [2021-05-02 12:51:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:22,558 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 110 transitions. [2021-05-02 12:51:22,559 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:22,559 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 110 transitions. [2021-05-02 12:51:22,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-05-02 12:51:22,559 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:22,559 INFO L523 BasicCegarLoop]: trace histogram [24, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:22,772 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 12:51:22,773 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:22,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1390454090, now seen corresponding path program 12 times [2021-05-02 12:51:22,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:22,773 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562141373] [2021-05-02 12:51:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:22,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:22,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:23,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-05-02 12:51:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 249 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-05-02 12:51:23,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:23,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562141373] [2021-05-02 12:51:23,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562141373] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:23,044 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570902478] [2021-05-02 12:51:23,044 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:30,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-05-02 12:51:30,165 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:30,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-02 12:51:30,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:30,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,256 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,258 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,261 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,267 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,286 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,296 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:30,312 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 171 proven. 78 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-05-02 12:51:30,313 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570902478] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:30,313 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:30,313 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16] total 18 [2021-05-02 12:51:30,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261235754] [2021-05-02 12:51:30,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 12:51:30,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:30,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 12:51:30,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2021-05-02 12:51:30,315 INFO L87 Difference]: Start difference. First operand 88 states and 110 transitions. Second operand has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 16 states have internal predecessors, (65), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:51:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:32,212 INFO L93 Difference]: Finished difference Result 160 states and 202 transitions. [2021-05-02 12:51:32,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 12:51:32,212 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 16 states have internal predecessors, (65), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 70 [2021-05-02 12:51:32,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:32,213 INFO L225 Difference]: With dead ends: 160 [2021-05-02 12:51:32,213 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 12:51:32,213 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1550.3ms TimeCoverageRelationStatistics Valid=331, Invalid=725, Unknown=0, NotChecked=0, Total=1056 [2021-05-02 12:51:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 12:51:32,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-05-02 12:51:32,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 71 states have (on average 1.2394366197183098) internal successors, (88), 71 states have internal predecessors, (88), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:32,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2021-05-02 12:51:32,220 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 70 [2021-05-02 12:51:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:32,220 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2021-05-02 12:51:32,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 3.611111111111111) internal successors, (65), 16 states have internal predecessors, (65), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:51:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2021-05-02 12:51:32,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-05-02 12:51:32,220 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:32,220 INFO L523 BasicCegarLoop]: trace histogram [26, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:32,438 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 12:51:32,438 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:32,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1316589984, now seen corresponding path program 13 times [2021-05-02 12:51:32,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:32,439 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200728813] [2021-05-02 12:51:32,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:32,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:32,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:32,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:32,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:32,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-05-02 12:51:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 289 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-05-02 12:51:32,713 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:32,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200728813] [2021-05-02 12:51:32,713 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200728813] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:32,713 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702309500] [2021-05-02 12:51:32,713 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:32,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 16 conjunts are in the unsatisfiable core [2021-05-02 12:51:32,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:32,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,923 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,938 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:32,977 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 199 proven. 91 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-05-02 12:51:32,977 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702309500] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:32,977 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:32,977 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17] total 19 [2021-05-02 12:51:32,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124766534] [2021-05-02 12:51:32,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 12:51:32,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:32,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 12:51:32,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=216, Unknown=0, NotChecked=0, Total=342 [2021-05-02 12:51:32,978 INFO L87 Difference]: Start difference. First operand 89 states and 111 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:35,231 INFO L93 Difference]: Finished difference Result 162 states and 204 transitions. [2021-05-02 12:51:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-05-02 12:51:35,231 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 72 [2021-05-02 12:51:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:35,233 INFO L225 Difference]: With dead ends: 162 [2021-05-02 12:51:35,233 INFO L226 Difference]: Without dead ends: 90 [2021-05-02 12:51:35,234 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1702.3ms TimeCoverageRelationStatistics Valid=376, Invalid=814, Unknown=0, NotChecked=0, Total=1190 [2021-05-02 12:51:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-05-02 12:51:35,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-05-02 12:51:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 72 states have (on average 1.2361111111111112) internal successors, (89), 72 states have internal predecessors, (89), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 112 transitions. [2021-05-02 12:51:35,265 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 112 transitions. Word has length 72 [2021-05-02 12:51:35,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:35,265 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 112 transitions. [2021-05-02 12:51:35,265 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 17 states have internal predecessors, (56), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:35,265 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 112 transitions. [2021-05-02 12:51:35,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-05-02 12:51:35,266 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:35,266 INFO L523 BasicCegarLoop]: trace histogram [28, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:35,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:35,469 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash -286155254, now seen corresponding path program 14 times [2021-05-02 12:51:35,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:35,469 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120847615] [2021-05-02 12:51:35,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:35,963 WARN L205 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2021-05-02 12:51:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:35,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:36,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-05-02 12:51:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 332 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-05-02 12:51:36,128 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:36,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120847615] [2021-05-02 12:51:36,128 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120847615] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:36,128 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328057771] [2021-05-02 12:51:36,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:37,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:51:37,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:37,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 971 conjuncts, 17 conjunts are in the unsatisfiable core [2021-05-02 12:51:37,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:37,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,060 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,062 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 228 proven. 105 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-05-02 12:51:37,118 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328057771] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:37,118 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:37,118 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18] total 20 [2021-05-02 12:51:37,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770558393] [2021-05-02 12:51:37,118 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 12:51:37,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:37,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 12:51:37,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=238, Unknown=0, NotChecked=0, Total=380 [2021-05-02 12:51:37,119 INFO L87 Difference]: Start difference. First operand 90 states and 112 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:39,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:39,242 INFO L93 Difference]: Finished difference Result 164 states and 206 transitions. [2021-05-02 12:51:39,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 12:51:39,242 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 74 [2021-05-02 12:51:39,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:39,243 INFO L225 Difference]: With dead ends: 164 [2021-05-02 12:51:39,243 INFO L226 Difference]: Without dead ends: 91 [2021-05-02 12:51:39,243 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 2172.7ms TimeCoverageRelationStatistics Valid=424, Invalid=908, Unknown=0, NotChecked=0, Total=1332 [2021-05-02 12:51:39,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-05-02 12:51:39,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-05-02 12:51:39,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.2328767123287672) internal successors, (90), 73 states have internal predecessors, (90), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:39,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2021-05-02 12:51:39,250 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 74 [2021-05-02 12:51:39,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:39,250 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-05-02 12:51:39,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:51:39,250 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2021-05-02 12:51:39,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-05-02 12:51:39,250 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:39,250 INFO L523 BasicCegarLoop]: trace histogram [30, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:39,464 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 12:51:39,465 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1348028000, now seen corresponding path program 15 times [2021-05-02 12:51:39,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:39,465 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150291179] [2021-05-02 12:51:39,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:39,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:39,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-05-02 12:51:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:39,760 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 12:51:39,760 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:39,760 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150291179] [2021-05-02 12:51:39,761 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150291179] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:39,761 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928201856] [2021-05-02 12:51:39,761 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:52,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2021-05-02 12:51:52,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:52,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 975 conjuncts, 18 conjunts are in the unsatisfiable core [2021-05-02 12:51:52,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:52,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,110 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,115 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,127 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,155 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 258 proven. 120 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2021-05-02 12:51:52,181 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928201856] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:52,181 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:52,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19] total 21 [2021-05-02 12:51:52,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389158210] [2021-05-02 12:51:52,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 12:51:52,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:52,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 12:51:52,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=261, Unknown=0, NotChecked=0, Total=420 [2021-05-02 12:51:52,183 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:51:54,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:51:54,534 INFO L93 Difference]: Finished difference Result 166 states and 208 transitions. [2021-05-02 12:51:54,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 12:51:54,534 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 76 [2021-05-02 12:51:54,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:51:54,535 INFO L225 Difference]: With dead ends: 166 [2021-05-02 12:51:54,535 INFO L226 Difference]: Without dead ends: 92 [2021-05-02 12:51:54,535 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1867.7ms TimeCoverageRelationStatistics Valid=475, Invalid=1007, Unknown=0, NotChecked=0, Total=1482 [2021-05-02 12:51:54,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-05-02 12:51:54,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-05-02 12:51:54,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 74 states have internal predecessors, (91), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:51:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 114 transitions. [2021-05-02 12:51:54,542 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 114 transitions. Word has length 76 [2021-05-02 12:51:54,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:51:54,542 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 114 transitions. [2021-05-02 12:51:54,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 3.238095238095238) internal successors, (68), 19 states have internal predecessors, (68), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:51:54,542 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 114 transitions. [2021-05-02 12:51:54,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-05-02 12:51:54,542 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:51:54,542 INFO L523 BasicCegarLoop]: trace histogram [32, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:51:54,756 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 12:51:54,757 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:51:54,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:51:54,757 INFO L82 PathProgramCache]: Analyzing trace with hash 286385866, now seen corresponding path program 16 times [2021-05-02 12:51:54,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:51:54,757 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352296755] [2021-05-02 12:51:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:51:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:51:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:54,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:51:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:55,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-05-02 12:51:55,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:51:55,069 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2021-05-02 12:51:55,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:51:55,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352296755] [2021-05-02 12:51:55,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352296755] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:55,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706068456] [2021-05-02 12:51:55,070 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:51:58,482 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 12:51:58,482 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:51:58,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 12:51:58,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:51:58,516 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,517 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,537 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,538 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,546 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,547 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,548 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,549 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,550 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,552 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:51:58,583 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 292 proven. 136 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-05-02 12:51:58,583 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706068456] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:51:58,583 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:51:58,583 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 20] total 22 [2021-05-02 12:51:58,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135634452] [2021-05-02 12:51:58,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 12:51:58,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:51:58,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 12:51:58,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=285, Unknown=0, NotChecked=0, Total=462 [2021-05-02 12:51:58,584 INFO L87 Difference]: Start difference. First operand 92 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:00,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:00,845 INFO L93 Difference]: Finished difference Result 168 states and 210 transitions. [2021-05-02 12:52:00,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-05-02 12:52:00,846 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 78 [2021-05-02 12:52:00,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:00,847 INFO L225 Difference]: With dead ends: 168 [2021-05-02 12:52:00,847 INFO L226 Difference]: Without dead ends: 93 [2021-05-02 12:52:00,847 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 2077.1ms TimeCoverageRelationStatistics Valid=529, Invalid=1111, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 12:52:00,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-05-02 12:52:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-05-02 12:52:00,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.2266666666666666) internal successors, (92), 75 states have internal predecessors, (92), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:52:00,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 115 transitions. [2021-05-02 12:52:00,854 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 115 transitions. Word has length 78 [2021-05-02 12:52:00,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:00,854 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 115 transitions. [2021-05-02 12:52:00,854 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 22 states have (on average 2.6818181818181817) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:00,854 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 115 transitions. [2021-05-02 12:52:00,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-02 12:52:00,854 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:00,854 INFO L523 BasicCegarLoop]: trace histogram [34, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:01,068 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 12:52:01,069 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:01,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:01,069 INFO L82 PathProgramCache]: Analyzing trace with hash -55855904, now seen corresponding path program 17 times [2021-05-02 12:52:01,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:01,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115838648] [2021-05-02 12:52:01,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:01,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:01,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:52:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-05-02 12:52:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 479 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2021-05-02 12:52:01,397 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:01,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115838648] [2021-05-02 12:52:01,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115838648] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:01,397 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27501918] [2021-05-02 12:52:01,397 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:04,723 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 11 check-sat command(s) [2021-05-02 12:52:04,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:04,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 12:52:04,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:04,755 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,756 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,763 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,767 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,774 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,778 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,783 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,785 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,801 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 327 proven. 153 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-05-02 12:52:04,852 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27501918] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:04,852 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:04,852 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 23 [2021-05-02 12:52:04,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240176104] [2021-05-02 12:52:04,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-05-02 12:52:04,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:04,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-05-02 12:52:04,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2021-05-02 12:52:04,853 INFO L87 Difference]: Start difference. First operand 93 states and 115 transitions. Second operand has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:07,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:07,463 INFO L93 Difference]: Finished difference Result 170 states and 212 transitions. [2021-05-02 12:52:07,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-05-02 12:52:07,464 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2021-05-02 12:52:07,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:07,465 INFO L225 Difference]: With dead ends: 170 [2021-05-02 12:52:07,465 INFO L226 Difference]: Without dead ends: 94 [2021-05-02 12:52:07,465 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2224.5ms TimeCoverageRelationStatistics Valid=586, Invalid=1220, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 12:52:07,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-05-02 12:52:07,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2021-05-02 12:52:07,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 76 states have (on average 1.2236842105263157) internal successors, (93), 76 states have internal predecessors, (93), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:52:07,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 116 transitions. [2021-05-02 12:52:07,472 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 116 transitions. Word has length 80 [2021-05-02 12:52:07,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:07,472 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 116 transitions. [2021-05-02 12:52:07,472 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.608695652173913) internal successors, (60), 21 states have internal predecessors, (60), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:07,472 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 116 transitions. [2021-05-02 12:52:07,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-05-02 12:52:07,473 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:07,473 INFO L523 BasicCegarLoop]: trace histogram [36, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:07,673 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:07,673 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:07,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:07,674 INFO L82 PathProgramCache]: Analyzing trace with hash 963477386, now seen corresponding path program 18 times [2021-05-02 12:52:07,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:07,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510687128] [2021-05-02 12:52:07,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:07,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:07,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:52:07,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:08,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-05-02 12:52:08,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:08,032 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 534 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2021-05-02 12:52:08,032 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:08,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510687128] [2021-05-02 12:52:08,032 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510687128] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:08,032 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425892370] [2021-05-02 12:52:08,033 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:36,257 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2021-05-02 12:52:36,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:36,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 1003 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 12:52:36,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:36,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:36,400 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 364 proven. 171 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-05-02 12:52:36,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425892370] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:36,400 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:36,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 24 [2021-05-02 12:52:36,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78108437] [2021-05-02 12:52:36,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-05-02 12:52:36,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:36,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-05-02 12:52:36,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=216, Invalid=336, Unknown=0, NotChecked=0, Total=552 [2021-05-02 12:52:36,401 INFO L87 Difference]: Start difference. First operand 94 states and 116 transitions. Second operand has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:39,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:39,513 INFO L93 Difference]: Finished difference Result 172 states and 214 transitions. [2021-05-02 12:52:39,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-05-02 12:52:39,513 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 82 [2021-05-02 12:52:39,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:39,514 INFO L225 Difference]: With dead ends: 172 [2021-05-02 12:52:39,514 INFO L226 Difference]: Without dead ends: 95 [2021-05-02 12:52:39,515 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 2320.2ms TimeCoverageRelationStatistics Valid=646, Invalid=1334, Unknown=0, NotChecked=0, Total=1980 [2021-05-02 12:52:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-05-02 12:52:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-05-02 12:52:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 77 states have (on average 1.2207792207792207) internal successors, (94), 77 states have internal predecessors, (94), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:52:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2021-05-02 12:52:39,522 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 82 [2021-05-02 12:52:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:39,522 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2021-05-02 12:52:39,522 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.5416666666666665) internal successors, (61), 22 states have internal predecessors, (61), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2021-05-02 12:52:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-05-02 12:52:39,522 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:39,522 INFO L523 BasicCegarLoop]: trace histogram [38, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:39,736 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:39,737 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:39,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:39,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1997971424, now seen corresponding path program 19 times [2021-05-02 12:52:39,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:39,737 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396432517] [2021-05-02 12:52:39,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:39,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:52:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:40,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-05-02 12:52:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:40,105 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-05-02 12:52:40,105 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:40,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396432517] [2021-05-02 12:52:40,105 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396432517] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:40,105 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413092216] [2021-05-02 12:52:40,105 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:40,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 12:52:40,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:40,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,303 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,306 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,318 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:40,397 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 403 proven. 190 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-05-02 12:52:40,397 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413092216] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:40,397 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:40,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23] total 25 [2021-05-02 12:52:40,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019812616] [2021-05-02 12:52:40,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-05-02 12:52:40,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:40,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-05-02 12:52:40,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=237, Invalid=363, Unknown=0, NotChecked=0, Total=600 [2021-05-02 12:52:40,398 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand has 25 states, 25 states have (on average 2.48) internal successors, (62), 23 states have internal predecessors, (62), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:43,268 INFO L93 Difference]: Finished difference Result 174 states and 216 transitions. [2021-05-02 12:52:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-05-02 12:52:43,268 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 23 states have internal predecessors, (62), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 84 [2021-05-02 12:52:43,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:43,269 INFO L225 Difference]: With dead ends: 174 [2021-05-02 12:52:43,269 INFO L226 Difference]: Without dead ends: 96 [2021-05-02 12:52:43,270 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2410.1ms TimeCoverageRelationStatistics Valid=709, Invalid=1453, Unknown=0, NotChecked=0, Total=2162 [2021-05-02 12:52:43,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-05-02 12:52:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-05-02 12:52:43,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 78 states have (on average 1.2179487179487178) internal successors, (95), 78 states have internal predecessors, (95), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:52:43,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2021-05-02 12:52:43,277 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 84 [2021-05-02 12:52:43,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:43,277 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2021-05-02 12:52:43,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 2.48) internal successors, (62), 23 states have internal predecessors, (62), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:43,277 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2021-05-02 12:52:43,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-05-02 12:52:43,277 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:43,277 INFO L523 BasicCegarLoop]: trace histogram [40, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:43,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 12:52:43,478 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:43,478 INFO L82 PathProgramCache]: Analyzing trace with hash 758147146, now seen corresponding path program 20 times [2021-05-02 12:52:43,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:43,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002308216] [2021-05-02 12:52:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:43,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:52:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:43,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-05-02 12:52:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 653 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-05-02 12:52:43,843 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:43,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002308216] [2021-05-02 12:52:43,843 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002308216] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:43,843 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778878925] [2021-05-02 12:52:43,843 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:52:44,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:52:44,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:52:44,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1019 conjuncts, 23 conjunts are in the unsatisfiable core [2021-05-02 12:52:44,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:52:44,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,883 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,887 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,888 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,910 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,917 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:52:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 444 proven. 210 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-05-02 12:52:44,953 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [778878925] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:44,953 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:52:44,953 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24] total 26 [2021-05-02 12:52:44,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491092700] [2021-05-02 12:52:44,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 26 states [2021-05-02 12:52:44,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:52:44,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-05-02 12:52:44,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2021-05-02 12:52:44,954 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:47,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:52:47,696 INFO L93 Difference]: Finished difference Result 176 states and 218 transitions. [2021-05-02 12:52:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-05-02 12:52:47,698 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 86 [2021-05-02 12:52:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:52:47,698 INFO L225 Difference]: With dead ends: 176 [2021-05-02 12:52:47,698 INFO L226 Difference]: Without dead ends: 97 [2021-05-02 12:52:47,699 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 2538.9ms TimeCoverageRelationStatistics Valid=775, Invalid=1577, Unknown=0, NotChecked=0, Total=2352 [2021-05-02 12:52:47,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-05-02 12:52:47,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-05-02 12:52:47,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 79 states have internal predecessors, (96), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:52:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 119 transitions. [2021-05-02 12:52:47,706 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 119 transitions. Word has length 86 [2021-05-02 12:52:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:52:47,706 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 119 transitions. [2021-05-02 12:52:47,706 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 26 states, 26 states have (on average 2.423076923076923) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:52:47,706 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 119 transitions. [2021-05-02 12:52:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-05-02 12:52:47,707 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:52:47,707 INFO L523 BasicCegarLoop]: trace histogram [42, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:52:47,907 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-05-02 12:52:47,907 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:52:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:52:47,908 INFO L82 PathProgramCache]: Analyzing trace with hash 531872608, now seen corresponding path program 21 times [2021-05-02 12:52:47,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:52:47,908 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330544299] [2021-05-02 12:52:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:52:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:48,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:52:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:48,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:52:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:48,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-05-02 12:52:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:52:48,291 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 717 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2021-05-02 12:52:48,291 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:52:48,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330544299] [2021-05-02 12:52:48,291 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330544299] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:52:48,291 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636030007] [2021-05-02 12:52:48,291 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:02,062 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 12:53:02,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:02,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 12:53:02,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:02,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-05-02 12:53:02,157 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,159 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:02,159 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,159 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:10 [2021-05-02 12:53:02,179 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,180 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,200 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-05-02 12:53:02,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-05-02 12:53:02,203 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,206 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:02,207 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,207 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-05-02 12:53:02,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,253 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-05-02 12:53:02,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-05-02 12:53:02,257 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,263 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:02,264 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,264 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2021-05-02 12:53:02,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,291 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,320 INFO L354 Elim1Store]: treesize reduction 135, result has 18.7 percent of original size [2021-05-02 12:53:02,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 50 [2021-05-02 12:53:02,325 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,331 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:02,332 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,332 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2021-05-02 12:53:02,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,423 INFO L354 Elim1Store]: treesize reduction 208, result has 16.5 percent of original size [2021-05-02 12:53:02,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 63 [2021-05-02 12:53:02,425 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,433 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:02,434 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,434 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2021-05-02 12:53:02,468 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,470 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,540 INFO L354 Elim1Store]: treesize reduction 295, result has 14.7 percent of original size [2021-05-02 12:53:02,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 76 [2021-05-02 12:53:02,545 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,554 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:02,555 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,555 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2021-05-02 12:53:02,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,593 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,665 INFO L354 Elim1Store]: treesize reduction 396, result has 13.3 percent of original size [2021-05-02 12:53:02,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 89 [2021-05-02 12:53:02,667 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,678 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:02,679 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,679 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:71 [2021-05-02 12:53:02,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,818 INFO L354 Elim1Store]: treesize reduction 497, result has 12.5 percent of original size [2021-05-02 12:53:02,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 101 [2021-05-02 12:53:02,821 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:02,837 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:02,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,841 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 12:53:02,841 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:92, output treesize:88 [2021-05-02 12:53:02,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,908 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,909 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:02,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,059 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,061 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,074 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,107 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,108 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,124 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,126 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 620 proven. 7 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked. [2021-05-02 12:53:03,192 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636030007] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:03,192 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:03,192 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 13] total 38 [2021-05-02 12:53:03,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171040929] [2021-05-02 12:53:03,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states [2021-05-02 12:53:03,192 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:03,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-05-02 12:53:03,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1081, Unknown=0, NotChecked=0, Total=1406 [2021-05-02 12:53:03,193 INFO L87 Difference]: Start difference. First operand 97 states and 119 transitions. Second operand has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:53:04,521 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2021-05-02 12:53:05,044 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2021-05-02 12:53:05,186 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2021-05-02 12:53:05,339 WARN L205 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2021-05-02 12:53:05,524 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2021-05-02 12:53:05,737 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:05,974 WARN L205 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:06,185 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:06,404 WARN L205 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:06,646 WARN L205 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:06,918 WARN L205 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:07,181 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:07,449 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:07,732 WARN L205 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:08,001 WARN L205 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:08,315 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:08,604 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:08,892 WARN L205 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:09,217 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2021-05-02 12:53:09,734 WARN L205 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 195 [2021-05-02 12:53:10,022 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2021-05-02 12:53:10,398 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2021-05-02 12:53:11,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:11,063 INFO L93 Difference]: Finished difference Result 179 states and 221 transitions. [2021-05-02 12:53:11,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-05-02 12:53:11,064 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 88 [2021-05-02 12:53:11,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:11,065 INFO L225 Difference]: With dead ends: 179 [2021-05-02 12:53:11,065 INFO L226 Difference]: Without dead ends: 98 [2021-05-02 12:53:11,066 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 658 ImplicationChecksByTransitivity, 6552.9ms TimeCoverageRelationStatistics Valid=940, Invalid=3220, Unknown=0, NotChecked=0, Total=4160 [2021-05-02 12:53:11,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-05-02 12:53:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2021-05-02 12:53:11,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.2) internal successors, (96), 80 states have internal predecessors, (96), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:53:11,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2021-05-02 12:53:11,075 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 88 [2021-05-02 12:53:11,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:11,075 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2021-05-02 12:53:11,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 38 states, 38 states have (on average 2.0789473684210527) internal successors, (79), 36 states have internal predecessors, (79), 2 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:53:11,075 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2021-05-02 12:53:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-05-02 12:53:11,076 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:11,076 INFO L523 BasicCegarLoop]: trace histogram [44, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:11,299 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:11,299 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:11,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:11,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1012888520, now seen corresponding path program 1 times [2021-05-02 12:53:11,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:11,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936481326] [2021-05-02 12:53:11,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:11,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:11,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:53:11,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-05-02 12:53:11,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:11,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 0 proven. 784 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2021-05-02 12:53:11,726 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:11,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936481326] [2021-05-02 12:53:11,726 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936481326] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:11,726 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333642183] [2021-05-02 12:53:11,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:11,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:11,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1032 conjuncts, 25 conjunts are in the unsatisfiable core [2021-05-02 12:53:11,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:11,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,960 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,979 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,987 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:11,997 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:12,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1038 backedges. 532 proven. 253 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2021-05-02 12:53:12,037 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333642183] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:12,037 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:12,037 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 28 [2021-05-02 12:53:12,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45703067] [2021-05-02 12:53:12,038 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states [2021-05-02 12:53:12,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:12,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-05-02 12:53:12,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=306, Invalid=450, Unknown=0, NotChecked=0, Total=756 [2021-05-02 12:53:12,039 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:53:14,551 WARN L205 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2021-05-02 12:53:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:16,715 INFO L93 Difference]: Finished difference Result 180 states and 220 transitions. [2021-05-02 12:53:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-05-02 12:53:16,715 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 90 [2021-05-02 12:53:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:16,716 INFO L225 Difference]: With dead ends: 180 [2021-05-02 12:53:16,716 INFO L226 Difference]: Without dead ends: 99 [2021-05-02 12:53:16,717 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 2899.9ms TimeCoverageRelationStatistics Valid=916, Invalid=1840, Unknown=0, NotChecked=0, Total=2756 [2021-05-02 12:53:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-05-02 12:53:16,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-05-02 12:53:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 81 states have internal predecessors, (97), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:53:16,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2021-05-02 12:53:16,726 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 90 [2021-05-02 12:53:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:16,726 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2021-05-02 12:53:16,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 28 states, 28 states have (on average 2.3214285714285716) internal successors, (65), 26 states have internal predecessors, (65), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:53:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2021-05-02 12:53:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-05-02 12:53:16,727 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:16,727 INFO L523 BasicCegarLoop]: trace histogram [46, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:16,940 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-05-02 12:53:16,941 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:16,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:16,941 INFO L82 PathProgramCache]: Analyzing trace with hash -593474654, now seen corresponding path program 2 times [2021-05-02 12:53:16,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:16,941 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562679627] [2021-05-02 12:53:16,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:17,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:17,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:53:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-05-02 12:53:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:17,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 0 proven. 854 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2021-05-02 12:53:17,366 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:17,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562679627] [2021-05-02 12:53:17,366 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562679627] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:17,366 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817706104] [2021-05-02 12:53:17,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:18,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 12:53:18,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:18,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 1040 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 12:53:18,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:18,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,329 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,367 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,369 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,417 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,429 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,436 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1131 backedges. 579 proven. 276 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-05-02 12:53:18,488 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817706104] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:18,488 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:18,488 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 27] total 29 [2021-05-02 12:53:18,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072119110] [2021-05-02 12:53:18,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states [2021-05-02 12:53:18,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:18,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-05-02 12:53:18,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=481, Unknown=0, NotChecked=0, Total=812 [2021-05-02 12:53:18,489 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 27 states have internal predecessors, (66), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:53:22,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:22,869 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2021-05-02 12:53:22,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-05-02 12:53:22,869 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 27 states have internal predecessors, (66), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 92 [2021-05-02 12:53:22,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:22,870 INFO L225 Difference]: With dead ends: 182 [2021-05-02 12:53:22,870 INFO L226 Difference]: Without dead ends: 100 [2021-05-02 12:53:22,871 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2985.3ms TimeCoverageRelationStatistics Valid=991, Invalid=1979, Unknown=0, NotChecked=0, Total=2970 [2021-05-02 12:53:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-05-02 12:53:22,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-05-02 12:53:22,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 82 states have (on average 1.1951219512195121) internal successors, (98), 82 states have internal predecessors, (98), 13 states have call successors, (13), 7 states have call predecessors, (13), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-02 12:53:22,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2021-05-02 12:53:22,880 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 92 [2021-05-02 12:53:22,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:22,880 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2021-05-02 12:53:22,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 29 states, 29 states have (on average 2.2758620689655173) internal successors, (66), 27 states have internal predecessors, (66), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-02 12:53:22,881 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2021-05-02 12:53:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-05-02 12:53:22,881 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 12:53:22,881 INFO L523 BasicCegarLoop]: trace histogram [48, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 12:53:23,085 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 12:53:23,085 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 12:53:23,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 12:53:23,085 INFO L82 PathProgramCache]: Analyzing trace with hash -678738680, now seen corresponding path program 3 times [2021-05-02 12:53:23,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 12:53:23,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859034384] [2021-05-02 12:53:23,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 12:53:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:23,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 12:53:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:23,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-05-02 12:53:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:23,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-05-02 12:53:23,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 12:53:23,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 627 proven. 300 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2021-05-02 12:53:23,540 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 12:53:23,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859034384] [2021-05-02 12:53:23,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859034384] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:23,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086179831] [2021-05-02 12:53:23,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:37,169 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-05-02 12:53:37,169 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 12:53:37,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 35 conjunts are in the unsatisfiable core [2021-05-02 12:53:37,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 12:53:37,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-05-02 12:53:37,252 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,254 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:37,254 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,254 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:10 [2021-05-02 12:53:37,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,287 INFO L354 Elim1Store]: treesize reduction 32, result has 23.8 percent of original size [2021-05-02 12:53:37,287 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2021-05-02 12:53:37,288 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,292 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:37,293 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,293 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2021-05-02 12:53:37,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,333 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,355 INFO L354 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2021-05-02 12:53:37,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 37 [2021-05-02 12:53:37,357 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,364 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:37,365 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,365 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2021-05-02 12:53:37,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,434 INFO L354 Elim1Store]: treesize reduction 135, result has 18.7 percent of original size [2021-05-02 12:53:37,435 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 50 [2021-05-02 12:53:37,436 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,445 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:37,446 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,446 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:41 [2021-05-02 12:53:37,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,533 INFO L354 Elim1Store]: treesize reduction 208, result has 16.5 percent of original size [2021-05-02 12:53:37,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 55 treesize of output 63 [2021-05-02 12:53:37,537 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,547 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:37,548 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,548 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:55, output treesize:51 [2021-05-02 12:53:37,595 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,670 INFO L354 Elim1Store]: treesize reduction 295, result has 14.7 percent of original size [2021-05-02 12:53:37,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 65 treesize of output 76 [2021-05-02 12:53:37,674 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,686 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:37,686 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,686 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:65, output treesize:61 [2021-05-02 12:53:37,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,828 INFO L354 Elim1Store]: treesize reduction 396, result has 13.3 percent of original size [2021-05-02 12:53:37,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 21 case distinctions, treesize of input 75 treesize of output 89 [2021-05-02 12:53:37,831 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,845 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:37,846 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2021-05-02 12:53:37,846 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:75, output treesize:71 [2021-05-02 12:53:37,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:37,930 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,023 INFO L354 Elim1Store]: treesize reduction 497, result has 12.5 percent of original size [2021-05-02 12:53:38,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 28 case distinctions, treesize of input 84 treesize of output 101 [2021-05-02 12:53:38,025 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-05-02 12:53:38,048 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 12:53:38,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,050 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2021-05-02 12:53:38,050 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:92, output treesize:88 [2021-05-02 12:53:38,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,343 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,355 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,366 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,373 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,374 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,376 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 12:53:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1228 backedges. 785 proven. 7 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-05-02 12:53:38,472 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1086179831] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 12:53:38,472 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 12:53:38,472 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 13] total 41 [2021-05-02 12:53:38,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141356524] [2021-05-02 12:53:38,473 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states [2021-05-02 12:53:38,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 12:53:38,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-05-02 12:53:38,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=400, Invalid=1240, Unknown=0, NotChecked=0, Total=1640 [2021-05-02 12:53:38,474 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 39 states have internal predecessors, (90), 2 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:53:41,198 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2021-05-02 12:53:41,353 WARN L205 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2021-05-02 12:53:41,518 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2021-05-02 12:53:41,706 WARN L205 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2021-05-02 12:53:41,947 WARN L205 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:42,200 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:42,443 WARN L205 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:42,690 WARN L205 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:42,932 WARN L205 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:43,169 WARN L205 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:43,431 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:43,726 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:43,991 WARN L205 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:44,275 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:44,572 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:44,863 WARN L205 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:45,182 WARN L205 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:45,520 WARN L205 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:45,867 WARN L205 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:46,239 WARN L205 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2021-05-02 12:53:46,854 WARN L205 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2021-05-02 12:53:47,488 WARN L205 SmtUtils]: Spent 488.00 ms on a formula simplification. DAG size of input: 196 DAG size of output: 195 [2021-05-02 12:53:47,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 12:53:47,672 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2021-05-02 12:53:47,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 12:53:47,672 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 39 states have internal predecessors, (90), 2 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 94 [2021-05-02 12:53:47,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 12:53:47,673 INFO L225 Difference]: With dead ends: 128 [2021-05-02 12:53:47,673 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 12:53:47,674 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 7852.4ms TimeCoverageRelationStatistics Valid=1157, Invalid=3673, Unknown=0, NotChecked=0, Total=4830 [2021-05-02 12:53:47,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 12:53:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 12:53:47,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-02 12:53:47,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 12:53:47,674 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 94 [2021-05-02 12:53:47,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 12:53:47,674 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 12:53:47,674 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 41 states, 41 states have (on average 2.1951219512195124) internal successors, (90), 39 states have internal predecessors, (90), 2 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-02 12:53:47,674 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 12:53:47,674 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 12:53:47,875 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 12:53:47,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-05-02 12:53:48,255 WARN L205 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 315 DAG size of output: 313 [2021-05-02 12:53:48,507 WARN L205 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 124 [2021-05-02 12:53:49,685 WARN L205 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 256 DAG size of output: 96 [2021-05-02 12:53:49,691 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-05-02 12:53:49,691 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-05-02 12:53:49,691 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-05-02 12:53:49,691 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:53:49,691 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#t~string23.base)| |#t~string23.base|) (= |old(#t~string46.base)| |#t~string46.base|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string27.base| |old(#t~string27.base)|) (= |#t~string106.base| |old(#t~string106.base)|) (= |#t~string28.offset| |old(#t~string28.offset)|) (= |#t~string19.base| |old(#t~string19.base)|) (= |#t~string43.offset| |old(#t~string43.offset)|) (= |old(#t~string28.base)| |#t~string28.base|) (= |old(#valid)| |#valid|) (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string22.base| |old(#t~string22.base)|) (= |old(#t~string103.offset)| |#t~string103.offset|) (= |#t~string13.base| |old(#t~string13.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |old(#t~string43.base)| |#t~string43.base|) (= |#t~string21.base| |old(#t~string21.base)|) (= |old(~__tmpTR__int_1~0)| ~__tmpTR__int_1~0) (= |~#smp_def_rrlen_arr~0.base| |old(~#smp_def_rrlen_arr~0.base)|) (= |#t~string14.offset| |old(#t~string14.offset)|) (= |old(#t~string38.offset)| |#t~string38.offset|) (= |#t~string27.offset| |old(#t~string27.offset)|) (= |~#smp_def_rrlen_arr~0.offset| |old(~#smp_def_rrlen_arr~0.offset)|) (= |#t~string19.offset| |old(#t~string19.offset)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |old(#t~string106.offset)| |#t~string106.offset|) (= |#t~string21.offset| |old(#t~string21.offset)|) (= |old(#t~string22.offset)| |#t~string22.offset|) (= |#t~string14.base| |old(#t~string14.base)|) (= |old(#t~string38.base)| |#t~string38.base|) (= |#t~string98.base| |old(#t~string98.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#t~string46.offset)| |#t~string46.offset|) (= |old(#t~string98.offset)| |#t~string98.offset|) (= |#t~string13.offset| |old(#t~string13.offset)|) (= |#t~string23.offset| |old(#t~string23.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#t~string103.base)| |#t~string103.base|)) [2021-05-02 12:53:49,691 INFO L198 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:53:49,691 INFO L198 CegarLoopUtils]: For program point #Ultimate.C_memsetEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L194 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: (let ((.cse8 (select |#memory_int| |#Ultimate.C_memset_#ptr.base|))) (let ((.cse0 (= |#Ultimate.C_memset_#value| (select .cse8 (+ |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr205| (- 3))))) (.cse1 (= |#Ultimate.C_memset_#value| (select .cse8 (+ |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr205| (- 7))))) (.cse2 (= (select .cse8 (+ |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr205| (- 5))) |#Ultimate.C_memset_#value|)) (.cse3 (= |#Ultimate.C_memset_#value| (select .cse8 (+ |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr205| (- 6))))) (.cse4 (= |#Ultimate.C_memset_#value| (select .cse8 (+ |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr205| (- 4))))) (.cse5 (= |#Ultimate.C_memset_#value| (select .cse8 (+ |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr205| (- 1))))) (.cse6 (= |#Ultimate.C_memset_#value| (select .cse8 (+ |#Ultimate.C_memset_#ptr.offset| |#Ultimate.C_memset_#t~loopctr205| (- 2)))))) (or (and .cse0 .cse1 (<= |#Ultimate.C_memset_#t~loopctr205| 7) .cse2 .cse3 .cse4 .cse5 .cse6) (not (<= |#Ultimate.C_memset_#amount| 24)) (and .cse0 .cse2 .cse3 .cse4 .cse5 (<= |#Ultimate.C_memset_#t~loopctr205| 6) .cse6) (and .cse5 (<= |#Ultimate.C_memset_#t~loopctr205| 2) .cse6) (and .cse0 (<= |#Ultimate.C_memset_#t~loopctr205| 4) .cse4 .cse5 .cse6) (and .cse0 (<= |#Ultimate.C_memset_#t~loopctr205| 3) .cse5 .cse6) (and .cse0 .cse2 .cse4 .cse5 (<= |#Ultimate.C_memset_#t~loopctr205| 5) .cse6) (and (<= |#Ultimate.C_memset_#t~loopctr205| 0) (= |#memory_int| |old(#memory_int)|)) (and (<= |#Ultimate.C_memset_#t~loopctr205| 1) .cse5) (and .cse0 .cse1 .cse2 (exists ((|v_#Ultimate.C_memset_#t~loopctr205_222| Int)) (let ((.cse7 (select |#memory_int| |#Ultimate.C_memset_#ptr.base|))) (and (= (select .cse7 (+ |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#ptr.offset| (- 4))) |#Ultimate.C_memset_#value|) (= |#Ultimate.C_memset_#value| (select .cse7 (+ |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#ptr.offset| (- 6)))) (= |#Ultimate.C_memset_#value| (select .cse7 (+ |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#ptr.offset| (- 7)))) (< |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#amount|) (= |#Ultimate.C_memset_#value| (select .cse7 (+ |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#ptr.offset|))) (= |#Ultimate.C_memset_#value| (select .cse7 (+ |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#ptr.offset| (- 1)))) (<= |#Ultimate.C_memset_#t~loopctr205| (+ |v_#Ultimate.C_memset_#t~loopctr205_222| 1)) (= |#Ultimate.C_memset_#value| (select .cse7 (+ |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#ptr.offset| (- 2)))) (= (select .cse7 (+ |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#ptr.offset| (- 3))) |#Ultimate.C_memset_#value|) (= |#Ultimate.C_memset_#value| (select .cse7 (+ |v_#Ultimate.C_memset_#t~loopctr205_222| |#Ultimate.C_memset_#ptr.offset| (- 5))))))) .cse3 .cse4 .cse5 .cse6)))) [2021-05-02 12:53:49,692 INFO L194 CegarLoopUtils]: At program point #Ultimate.C_memsetENTRY(line -1) the Hoare annotation is: (or (not (<= |#Ultimate.C_memset_#amount| 24)) (= |#memory_int| |old(#memory_int)|)) [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point #Ultimate.C_memsetFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L382(lines 382 383) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L349(lines 349 410) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L374(lines 374 375) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L341(lines 341 411) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L399(lines 399 400) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L366(lines 366 367) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L399-2(lines 350 410) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point smp_get_llnumFINAL(lines 311 412) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L358(lines 358 359) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L325(line 325) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L325-1(line 325) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L325-3(line 325) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L325-5(lines 325 337) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L408(line 408) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point smp_get_llnumENTRY(lines 311 412) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L392(line 392) no Hoare annotation was computed. [2021-05-02 12:53:49,692 INFO L198 CegarLoopUtils]: For program point L392-2(lines 392 393) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L384(line 384) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L351(line 351) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L384-2(lines 384 385) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L376(line 376) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L376-2(lines 376 377) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L368(line 368) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L401-1(lines 401 406) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L368-2(lines 368 369) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L360(line 360) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L360-2(lines 360 361) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L394(line 394) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L394-2(lines 394 395) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L386(line 386) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L353(line 353) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L386-2(lines 386 387) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L378(line 378) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L345(lines 345 346) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L378-2(lines 378 379) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L345-2(lines 344 411) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L403(line 403) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L370(line 370) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L403-1(line 403) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L370-2(lines 370 371) no Hoare annotation was computed. [2021-05-02 12:53:49,693 INFO L198 CegarLoopUtils]: For program point L362(line 362) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L362-2(lines 362 363) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L404(lines 404 405) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point smp_get_llnumEXIT(lines 311 412) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L355(line 355) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L322(line 322) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L322-2(lines 322 323) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L347-1(lines 347 348) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L397(line 397) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L331(lines 331 337) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L331-2(lines 312 412) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L389(line 389) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L381(line 381) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L373(line 373) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L365(line 365) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L390(lines 390 391) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L357(line 357) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L201(line 201) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L189(lines 189 192) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L201 CegarLoopUtils]: At program point L218(line 218) the Hoare annotation is: true [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L185(lines 185 186) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L218-1(line 218) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L201 CegarLoopUtils]: At program point L202(line 202) the Hoare annotation is: true [2021-05-02 12:53:49,694 INFO L198 CegarLoopUtils]: For program point L202-1(line 202) no Hoare annotation was computed. [2021-05-02 12:53:49,694 INFO L201 CegarLoopUtils]: At program point L194(line 194) the Hoare annotation is: true [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L194-1(line 194) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L201 CegarLoopUtils]: At program point dStrHexENTRY(lines 173 222) the Hoare annotation is: true [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L207(lines 207 208) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L207-2(lines 207 208) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L203(lines 203 210) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L203-2(lines 196 220) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L199(lines 199 200) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point dStrHexFINAL(lines 173 222) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L201 CegarLoopUtils]: At program point L199-2(lines 199 200) the Hoare annotation is: true [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L195-2(lines 195 220) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L201 CegarLoopUtils]: At program point L195-3(lines 195 220) the Hoare annotation is: true [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L195-4(lines 195 220) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L201 CegarLoopUtils]: At program point L187(line 187) the Hoare annotation is: true [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L187-1(line 187) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point dStrHexEXIT(lines 173 222) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L201 CegarLoopUtils]: At program point L216(line 216) the Hoare annotation is: true [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L216-1(line 216) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L201 CegarLoopUtils]: At program point L204(line 204) the Hoare annotation is: true [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L204-1(line 204) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point smp_is_naa5FINAL(lines 169 172) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point smp_is_naa5ENTRY(lines 169 172) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point smp_is_naa5EXIT(lines 169 172) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L267(line 267) no Hoare annotation was computed. [2021-05-02 12:53:49,695 INFO L198 CegarLoopUtils]: For program point L234(line 234) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L234-2(lines 234 235) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point smp_get_numFINAL(lines 223 310) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L292(line 292) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L259-1(lines 259 260) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L292-2(lines 292 293) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L284(line 284) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L284-2(lines 284 285) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point smp_get_numENTRY(lines 223 310) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L276(line 276) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L243(lines 243 249) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L276-2(lines 276 277) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L243-2(lines 224 310) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L301(line 301) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L301-1(line 301) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L302(lines 302 303) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L269(line 269) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L261(lines 261 308) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L253(lines 253 309) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L237(line 237) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L237-1(line 237) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L237-3(line 237) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L237-5(lines 237 249) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L295(line 295) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point L287(line 287) no Hoare annotation was computed. [2021-05-02 12:53:49,696 INFO L198 CegarLoopUtils]: For program point smp_get_numEXIT(lines 223 310) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L279(line 279) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L271(line 271) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L263(line 263) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L263-2(line 263) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L288(lines 288 289) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L280(lines 280 281) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L272(lines 272 273) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L297(lines 297 298) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L297-2(lines 262 308) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L306(line 306) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L265(line 265) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L290(line 290) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L257(lines 257 258) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L290-2(lines 290 291) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L257-2(lines 256 309) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L282(line 282) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L282-2(lines 282 283) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L274(line 274) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L274-2(lines 274 275) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point L299-1(lines 299 304) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-05-02 12:53:49,697 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-05-02 12:53:49,697 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-05-02 12:53:49,697 INFO L198 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L194 CegarLoopUtils]: At program point L496(line 496) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L496-1(line 496) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 491 498) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|) (= |old(~__tmpTR__int_1~0)| ~__tmpTR__int_1~0)) [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point mainFINAL(lines 491 498) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point mainEXIT(lines 491 498) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 153 158) the Hoare annotation is: true [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L155(line 155) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L154(lines 154 156) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 153 158) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L154-2(lines 153 158) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 155) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L194 CegarLoopUtils]: At program point do_discover_listENTRY(lines 414 489) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |old(#valid)| |#valid|) (= |old(~__tmpTR__int_1~0)| ~__tmpTR__int_1~0)) [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L432(lines 432 433) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L432-2(lines 432 433) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L428(lines 428 429) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L428-2(lines 428 429) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point do_discover_listEXIT(lines 414 489) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L453(lines 453 457) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L445(line 445) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L445-2(lines 445 448) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L441(lines 441 444) no Hoare annotation was computed. [2021-05-02 12:53:49,698 INFO L198 CegarLoopUtils]: For program point L470(lines 470 473) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L437(lines 437 440) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L466(lines 466 467) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L462(lines 462 465) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L462-1(lines 462 465) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point do_discover_listFINAL(lines 414 489) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L450(line 450) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L450-2(lines 450 458) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L450-3(lines 450 458) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L194 CegarLoopUtils]: At program point L463(line 463) the Hoare annotation is: false [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L426(lines 426 427) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L426-2(lines 426 427) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L484(lines 484 487) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L480(lines 480 483) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L476(lines 476 479) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L468(lines 468 469) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L201 CegarLoopUtils]: At program point L435(line 435) the Hoare annotation is: true [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L435-1(line 435) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L460(line 460) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L460-2(lines 460 475) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L423(line 423) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L423-2(line 423) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L194 CegarLoopUtils]: At program point L452(line 452) the Hoare annotation is: false [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L452-1(line 452) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L162-1(lines 162 166) no Hoare annotation was computed. [2021-05-02 12:53:49,699 INFO L198 CegarLoopUtils]: For program point L162-3(lines 162 166) no Hoare annotation was computed. [2021-05-02 12:53:49,700 INFO L201 CegarLoopUtils]: At program point L162-4(lines 162 166) the Hoare annotation is: true [2021-05-02 12:53:49,700 INFO L198 CegarLoopUtils]: For program point L162-5(lines 162 166) no Hoare annotation was computed. [2021-05-02 12:53:49,700 INFO L198 CegarLoopUtils]: For program point smp_get_func_def_resp_lenFINAL(lines 159 168) no Hoare annotation was computed. [2021-05-02 12:53:49,700 INFO L198 CegarLoopUtils]: For program point smp_get_func_def_resp_lenEXIT(lines 159 168) no Hoare annotation was computed. [2021-05-02 12:53:49,700 INFO L198 CegarLoopUtils]: For program point L164(lines 164 165) no Hoare annotation was computed. [2021-05-02 12:53:49,700 INFO L201 CegarLoopUtils]: At program point smp_get_func_def_resp_lenENTRY(lines 159 168) the Hoare annotation is: true [2021-05-02 12:53:49,709 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,710 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,710 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,710 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,710 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,710 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,710 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,710 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,711 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,711 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,717 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,717 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,717 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,718 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 12:53:49 BoogieIcfgContainer [2021-05-02 12:53:49,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 12:53:49,721 INFO L168 Benchmark]: Toolchain (without parser) took 184575.81 ms. Allocated memory was 205.5 MB in the beginning and 325.1 MB in the end (delta: 119.5 MB). Free memory was 167.4 MB in the beginning and 283.1 MB in the end (delta: -115.6 MB). Peak memory consumption was 183.5 MB. Max. memory is 8.0 GB. [2021-05-02 12:53:49,721 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 205.5 MB. Free memory is still 185.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 12:53:49,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.19 ms. Allocated memory is still 205.5 MB. Free memory was 167.2 MB in the beginning and 175.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. [2021-05-02 12:53:49,721 INFO L168 Benchmark]: Boogie Preprocessor took 116.80 ms. Allocated memory is still 205.5 MB. Free memory was 175.1 MB in the beginning and 168.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2021-05-02 12:53:49,721 INFO L168 Benchmark]: RCFGBuilder took 1172.24 ms. Allocated memory is still 205.5 MB. Free memory was 168.3 MB in the beginning and 159.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 107.7 MB. Max. memory is 8.0 GB. [2021-05-02 12:53:49,721 INFO L168 Benchmark]: TraceAbstraction took 182902.97 ms. Allocated memory was 205.5 MB in the beginning and 325.1 MB in the end (delta: 119.5 MB). Free memory was 158.6 MB in the beginning and 283.1 MB in the end (delta: -124.4 MB). Peak memory consumption was 173.9 MB. Max. memory is 8.0 GB. [2021-05-02 12:53:49,722 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09 ms. Allocated memory is still 205.5 MB. Free memory is still 185.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 374.19 ms. Allocated memory is still 205.5 MB. Free memory was 167.2 MB in the beginning and 175.1 MB in the end (delta: -7.9 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 116.80 ms. Allocated memory is still 205.5 MB. Free memory was 175.1 MB in the beginning and 168.3 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1172.24 ms. Allocated memory is still 205.5 MB. Free memory was 168.3 MB in the beginning and 159.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 107.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 182902.97 ms. Allocated memory was 205.5 MB in the beginning and 325.1 MB in the end (delta: 119.5 MB). Free memory was 158.6 MB in the beginning and 283.1 MB in the end (delta: -124.4 MB). Peak memory consumption was 173.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 155]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 12 procedures, 201 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 181010.9ms, OverallIterations: 26, TraceHistogramMax: 48, EmptinessCheckTime: 25.3ms, AutomataDifference: 63328.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 1815.0ms, InitialAbstractionConstructionTime: 13.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2204 SDtfs, 1083 SDslu, 18502 SDs, 0 SdLazy, 9471 SolverSat, 1114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11461.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2662 GetRequests, 1858 SyntacticMatches, 0 SemanticMatches, 804 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4267 ImplicationChecksByTransitivity, 50991.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=25, InterpolantAutomatonStates: 483, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 243.3ms AutomataMinimizationTime, 26 MinimizatonAttempts, 23 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 23 LocationsWithAnnotation, 533 PreInvPairs, 558 NumberOfFragments, 658 HoareAnnotationTreeSize, 533 FomulaSimplifications, 6348 FormulaSimplificationTreeSizeReduction, 380.0ms HoareSimplificationTime, 23 FomulaSimplificationsInter, 7629 FormulaSimplificationTreeSizeReductionInter, 1415.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 720.4ms SsaConstructionTime, 96739.3ms SatisfiabilityAnalysisTime, 12857.4ms InterpolantComputationTime, 3546 NumberOfCodeBlocks, 3521 NumberOfCodeBlocksAsserted, 134 NumberOfCheckSat, 3495 ConstructedInterpolants, 13 QuantifiedInterpolants, 10230 SizeOfPredicates, 33 NumberOfNonLiveVariables, 23766 ConjunctsInSsa, 394 ConjunctsInUnsatCore, 51 InterpolantComputations, 2 PerfectInterpolantSequences, 11973/21604 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 162]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 195]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant [2021-05-02 12:53:49,724 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,724 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,724 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,727 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] [2021-05-02 12:53:49,728 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_#Ultimate.C_memset_#t~loopctr205_222,QUANTIFIED] Derived loop invariant: (((((((((((((((unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -3] && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -7]) && aux-#t~loopctr205-aux <= 7) && unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -5] == unknown-#value-unknown) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -6]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -4]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -1]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -2]) || !(unknown-#amount-unknown <= 24)) || ((((((unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -3] && unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -5] == unknown-#value-unknown) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -6]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -4]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -1]) && aux-#t~loopctr205-aux <= 6) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -2])) || ((unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -1] && aux-#t~loopctr205-aux <= 2) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -2])) || ((((unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -3] && aux-#t~loopctr205-aux <= 4) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -4]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -1]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -2])) || (((unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -3] && aux-#t~loopctr205-aux <= 3) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -1]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -2])) || (((((unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -3] && unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -5] == unknown-#value-unknown) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -4]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -1]) && aux-#t~loopctr205-aux <= 5) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -2])) || (aux-#t~loopctr205-aux <= 0 && unknown-#memory_int-unknown == \old(unknown-#memory_int-unknown))) || (aux-#t~loopctr205-aux <= 1 && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -1])) || (((((((unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -3] && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -7]) && unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -5] == unknown-#value-unknown) && (\exists v_#Ultimate.C_memset_#t~loopctr205_222 : int :: ((((((((unknown-#memory_int-unknown[#ptr][v_#Ultimate.C_memset_#t~loopctr205_222 + #ptr + -4] == unknown-#value-unknown && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][v_#Ultimate.C_memset_#t~loopctr205_222 + #ptr + -6]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][v_#Ultimate.C_memset_#t~loopctr205_222 + #ptr + -7]) && v_#Ultimate.C_memset_#t~loopctr205_222 < unknown-#amount-unknown) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][v_#Ultimate.C_memset_#t~loopctr205_222 + #ptr]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][v_#Ultimate.C_memset_#t~loopctr205_222 + #ptr + -1]) && aux-#t~loopctr205-aux <= v_#Ultimate.C_memset_#t~loopctr205_222 + 1) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][v_#Ultimate.C_memset_#t~loopctr205_222 + #ptr + -2]) && unknown-#memory_int-unknown[#ptr][v_#Ultimate.C_memset_#t~loopctr205_222 + #ptr + -3] == unknown-#value-unknown) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][v_#Ultimate.C_memset_#t~loopctr205_222 + #ptr + -5])) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -6]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -4]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -1]) && unknown-#value-unknown == unknown-#memory_int-unknown[#ptr][#ptr + aux-#t~loopctr205-aux + -2]) RESULT: Ultimate proved your program to be correct! Received shutdown request...