/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7390193 [2022-04-05 07:37:19,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-05 07:37:19,852 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-05 07:37:19,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-05 07:37:19,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-05 07:37:19,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-05 07:37:19,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-05 07:37:19,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-05 07:37:19,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-05 07:37:19,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-05 07:37:19,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-05 07:37:19,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-05 07:37:19,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-05 07:37:19,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-05 07:37:19,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-05 07:37:19,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-05 07:37:19,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-05 07:37:19,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-05 07:37:19,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-05 07:37:19,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-05 07:37:19,921 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-05 07:37:19,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-05 07:37:19,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-05 07:37:19,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-05 07:37:19,924 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-05 07:37:19,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-05 07:37:19,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-05 07:37:19,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-05 07:37:19,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-05 07:37:19,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-05 07:37:19,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-04-05 07:37:19,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-05 07:37:19,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-05 07:37:19,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-05 07:37:19,938 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-05 07:37:19,960 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-05 07:37:19,960 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-05 07:37:19,961 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-05 07:37:19,961 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-05 07:37:19,961 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-05 07:37:19,962 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-05 07:37:19,962 INFO L138 SettingsManager]: * Use SBE=true [2022-04-05 07:37:19,962 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-05 07:37:19,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-05 07:37:19,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-05 07:37:19,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-05 07:37:19,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 07:37:19,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-05 07:37:19,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-05 07:37:19,964 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-05 07:37:19,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-05 07:37:19,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-05 07:37:19,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-05 07:37:19,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-05 07:37:19,964 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-05 07:37:19,965 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-05 07:37:19,965 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-05 07:37:20,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-05 07:37:20,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-05 07:37:20,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-05 07:37:20,193 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-05 07:37:20,194 INFO L275 PluginConnector]: CDTParser initialized [2022-04-05 07:37:20,195 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-04-05 07:37:20,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0206718/0635f45167be41c0af8a1dea576361c9/FLAGbd5e1c5ba [2022-04-05 07:37:20,648 INFO L306 CDTParser]: Found 1 translation units. [2022-04-05 07:37:20,648 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c [2022-04-05 07:37:20,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0206718/0635f45167be41c0af8a1dea576361c9/FLAGbd5e1c5ba [2022-04-05 07:37:20,670 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0206718/0635f45167be41c0af8a1dea576361c9 [2022-04-05 07:37:20,672 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-05 07:37:20,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-05 07:37:20,675 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-05 07:37:20,689 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-05 07:37:20,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-05 07:37:20,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:20,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b12ca23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20, skipping insertion in model container [2022-04-05 07:37:20,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:20,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-05 07:37:20,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-05 07:37:20,872 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2022-04-05 07:37:20,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 07:37:20,917 INFO L203 MainTranslator]: Completed pre-run [2022-04-05 07:37:20,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound2.c[490,503] [2022-04-05 07:37:20,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-05 07:37:20,973 INFO L208 MainTranslator]: Completed translation [2022-04-05 07:37:20,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20 WrapperNode [2022-04-05 07:37:20,975 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-05 07:37:20,976 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-05 07:37:20,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-05 07:37:20,977 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-05 07:37:20,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:20,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:20,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:20,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:21,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:21,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:21,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:21,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-05 07:37:21,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-05 07:37:21,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-05 07:37:21,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-05 07:37:21,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (1/1) ... [2022-04-05 07:37:21,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-05 07:37:21,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:21,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-05 07:37:21,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-05 07:37:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-05 07:37:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-05 07:37:21,074 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-05 07:37:21,075 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-05 07:37:21,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-05 07:37:21,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-05 07:37:21,075 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-05 07:37:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-05 07:37:21,076 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-05 07:37:21,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-05 07:37:21,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-05 07:37:21,131 INFO L234 CfgBuilder]: Building ICFG [2022-04-05 07:37:21,132 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-05 07:37:21,305 INFO L275 CfgBuilder]: Performing block encoding [2022-04-05 07:37:21,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-05 07:37:21,310 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-05 07:37:21,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 07:37:21 BoogieIcfgContainer [2022-04-05 07:37:21,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-05 07:37:21,327 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-05 07:37:21,327 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-05 07:37:21,329 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-05 07:37:21,331 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 07:37:21" (1/1) ... [2022-04-05 07:37:21,333 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-05 07:37:21,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 07:37:21 BasicIcfg [2022-04-05 07:37:21,361 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-05 07:37:21,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-05 07:37:21,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-05 07:37:21,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-05 07:37:21,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 07:37:20" (1/4) ... [2022-04-05 07:37:21,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31550f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 07:37:21, skipping insertion in model container [2022-04-05 07:37:21,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 07:37:20" (2/4) ... [2022-04-05 07:37:21,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31550f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 07:37:21, skipping insertion in model container [2022-04-05 07:37:21,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 07:37:21" (3/4) ... [2022-04-05 07:37:21,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31550f09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 07:37:21, skipping insertion in model container [2022-04-05 07:37:21,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 05.04 07:37:21" (4/4) ... [2022-04-05 07:37:21,370 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound2.cqvasr [2022-04-05 07:37:21,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-05 07:37:21,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-05 07:37:21,422 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-05 07:37:21,430 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-05 07:37:21,430 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-05 07:37:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2022-04-05 07:37:21,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-04-05 07:37:21,450 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:21,451 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:21,452 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:21,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1630657446, now seen corresponding path program 1 times [2022-04-05 07:37:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:21,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093269657] [2022-04-05 07:37:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:21,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:21,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-05 07:37:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-05 07:37:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-05 07:37:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-04-05 07:37:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-04-05 07:37:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-04-05 07:37:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-04-05 07:37:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,654 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 07:37:21,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:21,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093269657] [2022-04-05 07:37:21,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093269657] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 07:37:21,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 07:37:21,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-05 07:37:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575462023] [2022-04-05 07:37:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 07:37:21,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-05 07:37:21,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:21,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-05 07:37:21,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 07:37:21,685 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 07:37:21,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:21,759 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2022-04-05 07:37:21,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-05 07:37:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2022-04-05 07:37:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:21,768 INFO L225 Difference]: With dead ends: 73 [2022-04-05 07:37:21,768 INFO L226 Difference]: Without dead ends: 35 [2022-04-05 07:37:21,771 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-05 07:37:21,776 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 20 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:21,777 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 42 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 07:37:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-04-05 07:37:21,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-04-05 07:37:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 07:37:21,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2022-04-05 07:37:21,823 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2022-04-05 07:37:21,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:21,823 INFO L478 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2022-04-05 07:37:21,824 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 07:37:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2022-04-05 07:37:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-04-05 07:37:21,826 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:21,827 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:21,828 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-05 07:37:21,828 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:21,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:21,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1790145708, now seen corresponding path program 1 times [2022-04-05 07:37:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:21,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211396014] [2022-04-05 07:37:21,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:21,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:21,866 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:21,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1438246143] [2022-04-05 07:37:21,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:21,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:21,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:21,875 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:21,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-05 07:37:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:21,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-05 07:37:21,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:22,131 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-05 07:37:22,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-05 07:37:22,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:22,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211396014] [2022-04-05 07:37:22,286 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:22,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438246143] [2022-04-05 07:37:22,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438246143] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:22,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:22,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-04-05 07:37:22,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401761724] [2022-04-05 07:37:22,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:22,287 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 07:37:22,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:22,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 07:37:22,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-04-05 07:37:22,288 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 07:37:22,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:22,439 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2022-04-05 07:37:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 07:37:22,439 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2022-04-05 07:37:22,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:22,441 INFO L225 Difference]: With dead ends: 52 [2022-04-05 07:37:22,442 INFO L226 Difference]: Without dead ends: 44 [2022-04-05 07:37:22,442 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-04-05 07:37:22,443 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:22,444 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 152 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 07:37:22,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-04-05 07:37:22,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-04-05 07:37:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 07:37:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2022-04-05 07:37:22,470 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2022-04-05 07:37:22,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:22,470 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2022-04-05 07:37:22,470 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-04-05 07:37:22,471 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2022-04-05 07:37:22,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-04-05 07:37:22,471 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:22,471 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:22,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:22,682 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:22,683 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:22,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash 375385207, now seen corresponding path program 1 times [2022-04-05 07:37:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:22,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577905575] [2022-04-05 07:37:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:22,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:22,695 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:22,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032165117] [2022-04-05 07:37:22,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:22,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:22,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:22,702 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:22,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-05 07:37:22,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:22,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 07:37:22,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-05 07:37:22,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-04-05 07:37:22,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:22,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577905575] [2022-04-05 07:37:22,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:22,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032165117] [2022-04-05 07:37:22,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032165117] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 07:37:22,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 07:37:22,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-04-05 07:37:22,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527211448] [2022-04-05 07:37:22,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 07:37:22,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 07:37:22,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:22,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 07:37:22,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-04-05 07:37:22,999 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 07:37:23,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:23,045 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-04-05 07:37:23,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-05 07:37:23,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 45 [2022-04-05 07:37:23,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:23,047 INFO L225 Difference]: With dead ends: 43 [2022-04-05 07:37:23,047 INFO L226 Difference]: Without dead ends: 41 [2022-04-05 07:37:23,048 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 80 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-05 07:37:23,050 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:23,051 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 137 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 07:37:23,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-04-05 07:37:23,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-04-05 07:37:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 23 states have internal predecessors, (25), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-04-05 07:37:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2022-04-05 07:37:23,062 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 45 [2022-04-05 07:37:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:23,063 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2022-04-05 07:37:23,063 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-04-05 07:37:23,063 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2022-04-05 07:37:23,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-04-05 07:37:23,065 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:23,065 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2022-04-05 07:37:23,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:23,290 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-05 07:37:23,290 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:23,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:23,291 INFO L85 PathProgramCache]: Analyzing trace with hash -788787523, now seen corresponding path program 1 times [2022-04-05 07:37:23,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:23,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936495050] [2022-04-05 07:37:23,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:23,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:23,303 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:23,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388638744] [2022-04-05 07:37:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:23,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:23,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:23,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:23,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-05 07:37:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:23,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-05 07:37:23,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-04-05 07:37:23,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:23,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:23,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936495050] [2022-04-05 07:37:23,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:23,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388638744] [2022-04-05 07:37:23,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [388638744] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 07:37:23,610 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 07:37:23,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2022-04-05 07:37:23,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380851042] [2022-04-05 07:37:23,611 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:23,611 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-04-05 07:37:23,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-04-05 07:37:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-04-05 07:37:23,612 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 07:37:23,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:23,739 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2022-04-05 07:37:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-04-05 07:37:23,739 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 50 [2022-04-05 07:37:23,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:23,740 INFO L225 Difference]: With dead ends: 54 [2022-04-05 07:37:23,740 INFO L226 Difference]: Without dead ends: 52 [2022-04-05 07:37:23,740 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-04-05 07:37:23,741 INFO L913 BasicCegarLoop]: 30 mSDtfsCounter, 26 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:23,741 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 168 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 07:37:23,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-04-05 07:37:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2022-04-05 07:37:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 18 states have call successors, (18), 6 states have call predecessors, (18), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 07:37:23,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-04-05 07:37:23,747 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 50 [2022-04-05 07:37:23,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:23,748 INFO L478 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-04-05 07:37:23,748 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 8 states have internal predecessors, (20), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-04-05 07:37:23,748 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-04-05 07:37:23,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-04-05 07:37:23,749 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:23,749 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2022-04-05 07:37:23,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:23,961 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:23,961 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:23,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:23,962 INFO L85 PathProgramCache]: Analyzing trace with hash -735644649, now seen corresponding path program 1 times [2022-04-05 07:37:23,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:23,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310730176] [2022-04-05 07:37:23,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:23,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:23,972 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:23,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1914912626] [2022-04-05 07:37:23,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:23,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:23,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:23,973 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:23,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-05 07:37:24,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:24,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 25 conjunts are in the unsatisfiable core [2022-04-05 07:37:24,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 27 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-04-05 07:37:24,329 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-04-05 07:37:24,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:24,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310730176] [2022-04-05 07:37:24,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:24,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914912626] [2022-04-05 07:37:24,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914912626] provided 1 perfect and 1 imperfect interpolant sequences [2022-04-05 07:37:24,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-04-05 07:37:24,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2022-04-05 07:37:24,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124333988] [2022-04-05 07:37:24,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 07:37:24,474 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-05 07:37:24,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:24,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-05 07:37:24,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-04-05 07:37:24,475 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 07:37:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:24,531 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2022-04-05 07:37:24,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 07:37:24,532 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 55 [2022-04-05 07:37:24,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:24,533 INFO L225 Difference]: With dead ends: 58 [2022-04-05 07:37:24,533 INFO L226 Difference]: Without dead ends: 56 [2022-04-05 07:37:24,534 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-04-05 07:37:24,534 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 12 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:24,536 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 146 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 07:37:24,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-04-05 07:37:24,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2022-04-05 07:37:24,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 07:37:24,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-04-05 07:37:24,548 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 55 [2022-04-05 07:37:24,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:24,549 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-04-05 07:37:24,550 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-04-05 07:37:24,551 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-04-05 07:37:24,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-04-05 07:37:24,554 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:24,554 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:24,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:24,772 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:24,772 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:24,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:24,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1700404515, now seen corresponding path program 1 times [2022-04-05 07:37:24,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:24,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166157941] [2022-04-05 07:37:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:24,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:24,784 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:24,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [763227618] [2022-04-05 07:37:24,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:24,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:24,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:24,786 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:24,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-05 07:37:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:24,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2022-04-05 07:37:24,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:24,998 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-04-05 07:37:24,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:25,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:25,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166157941] [2022-04-05 07:37:25,064 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:25,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763227618] [2022-04-05 07:37:25,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [763227618] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 07:37:25,064 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 07:37:25,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2022-04-05 07:37:25,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157415589] [2022-04-05 07:37:25,065 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:25,065 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-05 07:37:25,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:25,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-05 07:37:25,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-04-05 07:37:25,066 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-05 07:37:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:25,151 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2022-04-05 07:37:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-05 07:37:25,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60 [2022-04-05 07:37:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:25,152 INFO L225 Difference]: With dead ends: 62 [2022-04-05 07:37:25,152 INFO L226 Difference]: Without dead ends: 60 [2022-04-05 07:37:25,152 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-04-05 07:37:25,153 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 12 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:25,153 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 138 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 07:37:25,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-05 07:37:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2022-04-05 07:37:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 18 states have call successors, (18), 8 states have call predecessors, (18), 7 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-04-05 07:37:25,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2022-04-05 07:37:25,166 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 60 [2022-04-05 07:37:25,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:25,169 INFO L478 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2022-04-05 07:37:25,169 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 6 states have internal predecessors, (20), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-04-05 07:37:25,169 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2022-04-05 07:37:25,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-04-05 07:37:25,170 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:25,170 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 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] [2022-04-05 07:37:25,190 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:25,370 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:25,371 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:25,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:25,371 INFO L85 PathProgramCache]: Analyzing trace with hash 2004479621, now seen corresponding path program 1 times [2022-04-05 07:37:25,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:25,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369400586] [2022-04-05 07:37:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:25,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:25,381 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:25,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107247472] [2022-04-05 07:37:25,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:25,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:25,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:25,388 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:25,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-05 07:37:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:25,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-05 07:37:25,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-04-05 07:37:25,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:25,658 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-04-05 07:37:25,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369400586] [2022-04-05 07:37:25,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:25,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107247472] [2022-04-05 07:37:25,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107247472] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:25,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:25,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-04-05 07:37:25,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543428667] [2022-04-05 07:37:25,659 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:25,660 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 07:37:25,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:25,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 07:37:25,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-04-05 07:37:25,660 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-04-05 07:37:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:25,824 INFO L93 Difference]: Finished difference Result 106 states and 146 transitions. [2022-04-05 07:37:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 07:37:25,824 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2022-04-05 07:37:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:25,825 INFO L225 Difference]: With dead ends: 106 [2022-04-05 07:37:25,825 INFO L226 Difference]: Without dead ends: 98 [2022-04-05 07:37:25,825 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-04-05 07:37:25,826 INFO L913 BasicCegarLoop]: 60 mSDtfsCounter, 32 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:25,826 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 259 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 07:37:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-04-05 07:37:25,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2022-04-05 07:37:25,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 48 states have internal predecessors, (56), 34 states have call successors, (34), 8 states have call predecessors, (34), 7 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-04-05 07:37:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 122 transitions. [2022-04-05 07:37:25,836 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 122 transitions. Word has length 69 [2022-04-05 07:37:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:25,836 INFO L478 AbstractCegarLoop]: Abstraction has 89 states and 122 transitions. [2022-04-05 07:37:25,837 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2022-04-05 07:37:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 122 transitions. [2022-04-05 07:37:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-04-05 07:37:25,837 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:25,837 INFO L499 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:25,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:26,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:26,068 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:26,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:26,068 INFO L85 PathProgramCache]: Analyzing trace with hash -966489810, now seen corresponding path program 1 times [2022-04-05 07:37:26,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:26,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371308423] [2022-04-05 07:37:26,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:26,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:26,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:26,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [331437030] [2022-04-05 07:37:26,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:26,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:26,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:26,086 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:26,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-05 07:37:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:26,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 18 conjunts are in the unsatisfiable core [2022-04-05 07:37:26,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-04-05 07:37:26,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:26,435 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-04-05 07:37:26,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:26,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371308423] [2022-04-05 07:37:26,435 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:26,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331437030] [2022-04-05 07:37:26,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331437030] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:26,435 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:26,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2022-04-05 07:37:26,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533609832] [2022-04-05 07:37:26,436 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:26,436 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 07:37:26,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:26,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 07:37:26,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-04-05 07:37:26,436 INFO L87 Difference]: Start difference. First operand 89 states and 122 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-04-05 07:37:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:26,652 INFO L93 Difference]: Finished difference Result 132 states and 187 transitions. [2022-04-05 07:37:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-04-05 07:37:26,653 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 75 [2022-04-05 07:37:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:26,656 INFO L225 Difference]: With dead ends: 132 [2022-04-05 07:37:26,656 INFO L226 Difference]: Without dead ends: 128 [2022-04-05 07:37:26,656 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2022-04-05 07:37:26,657 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 33 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:26,657 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 207 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 07:37:26,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-04-05 07:37:26,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 96. [2022-04-05 07:37:26,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 53 states have internal predecessors, (60), 36 states have call successors, (36), 9 states have call predecessors, (36), 8 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2022-04-05 07:37:26,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2022-04-05 07:37:26,682 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 75 [2022-04-05 07:37:26,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:26,683 INFO L478 AbstractCegarLoop]: Abstraction has 96 states and 130 transitions. [2022-04-05 07:37:26,683 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 6 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-04-05 07:37:26,683 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 130 transitions. [2022-04-05 07:37:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-04-05 07:37:26,685 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:26,685 INFO L499 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:26,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:26,899 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:26,900 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:26,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:26,900 INFO L85 PathProgramCache]: Analyzing trace with hash -271689658, now seen corresponding path program 2 times [2022-04-05 07:37:26,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:26,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690497229] [2022-04-05 07:37:26,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:26,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:26,908 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:26,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175973034] [2022-04-05 07:37:26,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 07:37:26,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:26,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:26,910 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:26,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-04-05 07:37:26,961 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 07:37:26,961 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 07:37:26,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-05 07:37:26,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 18 proven. 24 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-04-05 07:37:27,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:27,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:27,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690497229] [2022-04-05 07:37:27,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:27,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175973034] [2022-04-05 07:37:27,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175973034] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 07:37:27,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 07:37:27,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2022-04-05 07:37:27,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561192160] [2022-04-05 07:37:27,579 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:27,580 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-04-05 07:37:27,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:27,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-04-05 07:37:27,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-04-05 07:37:27,580 INFO L87 Difference]: Start difference. First operand 96 states and 130 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-05 07:37:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:27,835 INFO L93 Difference]: Finished difference Result 128 states and 169 transitions. [2022-04-05 07:37:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 07:37:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 80 [2022-04-05 07:37:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:27,836 INFO L225 Difference]: With dead ends: 128 [2022-04-05 07:37:27,836 INFO L226 Difference]: Without dead ends: 126 [2022-04-05 07:37:27,837 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-04-05 07:37:27,837 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 35 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:27,837 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 217 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 07:37:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-04-05 07:37:27,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2022-04-05 07:37:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 67 states have (on average 1.164179104477612) internal successors, (78), 69 states have internal predecessors, (78), 44 states have call successors, (44), 12 states have call predecessors, (44), 11 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 07:37:27,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2022-04-05 07:37:27,850 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 80 [2022-04-05 07:37:27,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:27,850 INFO L478 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2022-04-05 07:37:27,850 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 9 states have internal predecessors, (25), 6 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-04-05 07:37:27,850 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2022-04-05 07:37:27,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-04-05 07:37:27,851 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:27,851 INFO L499 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:27,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:28,067 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-04-05 07:37:28,067 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:28,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:28,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1540307954, now seen corresponding path program 3 times [2022-04-05 07:37:28,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:28,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971120991] [2022-04-05 07:37:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:28,089 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:28,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321867028] [2022-04-05 07:37:28,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 07:37:28,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:28,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:28,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:28,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-04-05 07:37:28,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-04-05 07:37:28,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 07:37:28,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 36 conjunts are in the unsatisfiable core [2022-04-05 07:37:28,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 31 proven. 8 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-04-05 07:37:28,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:28,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:28,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971120991] [2022-04-05 07:37:28,585 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:28,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321867028] [2022-04-05 07:37:28,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321867028] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 07:37:28,585 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 07:37:28,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2022-04-05 07:37:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804215462] [2022-04-05 07:37:28,586 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:28,586 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-04-05 07:37:28,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:28,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-04-05 07:37:28,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-04-05 07:37:28,586 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-04-05 07:37:28,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:28,785 INFO L93 Difference]: Finished difference Result 132 states and 172 transitions. [2022-04-05 07:37:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-04-05 07:37:28,785 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 85 [2022-04-05 07:37:28,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:28,786 INFO L225 Difference]: With dead ends: 132 [2022-04-05 07:37:28,786 INFO L226 Difference]: Without dead ends: 130 [2022-04-05 07:37:28,787 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-04-05 07:37:28,787 INFO L913 BasicCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:28,787 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 208 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-05 07:37:28,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-04-05 07:37:28,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 127. [2022-04-05 07:37:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 70 states have (on average 1.1571428571428573) internal successors, (81), 72 states have internal predecessors, (81), 44 states have call successors, (44), 13 states have call predecessors, (44), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-04-05 07:37:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 167 transitions. [2022-04-05 07:37:28,799 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 167 transitions. Word has length 85 [2022-04-05 07:37:28,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:28,799 INFO L478 AbstractCegarLoop]: Abstraction has 127 states and 167 transitions. [2022-04-05 07:37:28,800 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 8 states have internal predecessors, (25), 4 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2022-04-05 07:37:28,800 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 167 transitions. [2022-04-05 07:37:28,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-04-05 07:37:28,800 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:28,800 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:28,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:29,018 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-04-05 07:37:29,018 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:29,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:29,018 INFO L85 PathProgramCache]: Analyzing trace with hash -757951041, now seen corresponding path program 1 times [2022-04-05 07:37:29,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:29,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062888584] [2022-04-05 07:37:29,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:29,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:29,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:29,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535656432] [2022-04-05 07:37:29,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:29,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:29,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:29,027 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:29,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-04-05 07:37:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:29,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 37 conjunts are in the unsatisfiable core [2022-04-05 07:37:29,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:29,502 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-04-05 07:37:29,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:29,819 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-04-05 07:37:29,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:29,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062888584] [2022-04-05 07:37:29,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:29,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535656432] [2022-04-05 07:37:29,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535656432] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:29,819 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:29,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2022-04-05 07:37:29,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292228769] [2022-04-05 07:37:29,820 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:29,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-04-05 07:37:29,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:29,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-04-05 07:37:29,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-04-05 07:37:29,821 INFO L87 Difference]: Start difference. First operand 127 states and 167 transitions. Second operand has 14 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-04-05 07:37:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:31,835 INFO L93 Difference]: Finished difference Result 212 states and 299 transitions. [2022-04-05 07:37:31,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-04-05 07:37:31,836 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) Word has length 91 [2022-04-05 07:37:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:31,837 INFO L225 Difference]: With dead ends: 212 [2022-04-05 07:37:31,837 INFO L226 Difference]: Without dead ends: 208 [2022-04-05 07:37:31,838 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2022-04-05 07:37:31,838 INFO L913 BasicCegarLoop]: 78 mSDtfsCounter, 49 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:31,839 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 389 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-04-05 07:37:31,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-04-05 07:37:31,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 204. [2022-04-05 07:37:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 107 states have (on average 1.1962616822429906) internal successors, (128), 108 states have internal predecessors, (128), 81 states have call successors, (81), 16 states have call predecessors, (81), 15 states have return successors, (79), 79 states have call predecessors, (79), 79 states have call successors, (79) [2022-04-05 07:37:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 288 transitions. [2022-04-05 07:37:31,876 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 288 transitions. Word has length 91 [2022-04-05 07:37:31,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:31,876 INFO L478 AbstractCegarLoop]: Abstraction has 204 states and 288 transitions. [2022-04-05 07:37:31,876 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.75) internal successors, (33), 13 states have internal predecessors, (33), 9 states have call successors, (28), 2 states have call predecessors, (28), 1 states have return successors, (25), 7 states have call predecessors, (25), 7 states have call successors, (25) [2022-04-05 07:37:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 288 transitions. [2022-04-05 07:37:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-04-05 07:37:31,877 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:31,877 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:31,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-04-05 07:37:32,094 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-04-05 07:37:32,094 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:32,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:32,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1452951817, now seen corresponding path program 4 times [2022-04-05 07:37:32,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:32,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992404888] [2022-04-05 07:37:32,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:32,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:32,104 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:32,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1437442224] [2022-04-05 07:37:32,105 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 07:37:32,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:32,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:32,111 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:32,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-04-05 07:37:32,162 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 07:37:32,162 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 07:37:32,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-05 07:37:32,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:32,281 INFO L134 CoverageAnalysis]: Checked inductivity of 281 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-04-05 07:37:32,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-05 07:37:32,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:32,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992404888] [2022-04-05 07:37:32,282 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:32,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437442224] [2022-04-05 07:37:32,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437442224] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-05 07:37:32,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-05 07:37:32,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-05 07:37:32,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845322002] [2022-04-05 07:37:32,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-05 07:37:32,282 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-05 07:37:32,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:32,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-05 07:37:32,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-05 07:37:32,283 INFO L87 Difference]: Start difference. First operand 204 states and 288 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-04-05 07:37:32,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:32,364 INFO L93 Difference]: Finished difference Result 257 states and 360 transitions. [2022-04-05 07:37:32,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-05 07:37:32,365 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 105 [2022-04-05 07:37:32,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:32,366 INFO L225 Difference]: With dead ends: 257 [2022-04-05 07:37:32,366 INFO L226 Difference]: Without dead ends: 185 [2022-04-05 07:37:32,367 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-04-05 07:37:32,367 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 6 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:32,368 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 161 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-05 07:37:32,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-04-05 07:37:32,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2022-04-05 07:37:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 90 states have (on average 1.1444444444444444) internal successors, (103), 91 states have internal predecessors, (103), 65 states have call successors, (65), 16 states have call predecessors, (65), 15 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-04-05 07:37:32,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 231 transitions. [2022-04-05 07:37:32,390 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 231 transitions. Word has length 105 [2022-04-05 07:37:32,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:32,390 INFO L478 AbstractCegarLoop]: Abstraction has 171 states and 231 transitions. [2022-04-05 07:37:32,390 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-04-05 07:37:32,390 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 231 transitions. [2022-04-05 07:37:32,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-04-05 07:37:32,391 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:32,391 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-04-05 07:37:32,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:32,607 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-04-05 07:37:32,607 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:32,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:32,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1708635976, now seen corresponding path program 1 times [2022-04-05 07:37:32,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:32,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350864370] [2022-04-05 07:37:32,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:32,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:32,622 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:32,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024546197] [2022-04-05 07:37:32,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:32,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:32,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:32,629 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:32,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-04-05 07:37:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-05 07:37:32,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 14 conjunts are in the unsatisfiable core [2022-04-05 07:37:32,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:32,881 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 122 proven. 23 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2022-04-05 07:37:32,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:33,147 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 32 proven. 23 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2022-04-05 07:37:33,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:33,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350864370] [2022-04-05 07:37:33,147 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:33,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024546197] [2022-04-05 07:37:33,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024546197] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:33,147 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:33,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2022-04-05 07:37:33,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901098877] [2022-04-05 07:37:33,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:33,148 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 07:37:33,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:33,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 07:37:33,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-04-05 07:37:33,149 INFO L87 Difference]: Start difference. First operand 171 states and 231 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-04-05 07:37:33,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:33,533 INFO L93 Difference]: Finished difference Result 215 states and 287 transitions. [2022-04-05 07:37:33,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-04-05 07:37:33,534 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 107 [2022-04-05 07:37:33,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:33,535 INFO L225 Difference]: With dead ends: 215 [2022-04-05 07:37:33,535 INFO L226 Difference]: Without dead ends: 144 [2022-04-05 07:37:33,537 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 200 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=456, Unknown=0, NotChecked=0, Total=600 [2022-04-05 07:37:33,538 INFO L913 BasicCegarLoop]: 53 mSDtfsCounter, 50 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:33,538 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 296 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 07:37:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-04-05 07:37:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2022-04-05 07:37:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 75 states have (on average 1.12) internal successors, (84), 76 states have internal predecessors, (84), 53 states have call successors, (53), 14 states have call predecessors, (53), 13 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 07:37:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 188 transitions. [2022-04-05 07:37:33,559 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 188 transitions. Word has length 107 [2022-04-05 07:37:33,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:33,560 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 188 transitions. [2022-04-05 07:37:33,560 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 8 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-04-05 07:37:33,560 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 188 transitions. [2022-04-05 07:37:33,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-04-05 07:37:33,561 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:33,561 INFO L499 BasicCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-04-05 07:37:33,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:33,773 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-04-05 07:37:33,773 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:33,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:33,774 INFO L85 PathProgramCache]: Analyzing trace with hash 259955901, now seen corresponding path program 2 times [2022-04-05 07:37:33,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:33,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777606219] [2022-04-05 07:37:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:33,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:33,787 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:33,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734816925] [2022-04-05 07:37:33,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 07:37:33,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:33,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:33,789 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:33,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-04-05 07:37:33,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 07:37:33,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 07:37:33,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 07:37:33,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:34,059 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 154 proven. 18 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2022-04-05 07:37:34,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 48 proven. 32 refuted. 0 times theorem prover too weak. 409 trivial. 0 not checked. [2022-04-05 07:37:34,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:34,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777606219] [2022-04-05 07:37:34,298 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:34,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734816925] [2022-04-05 07:37:34,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734816925] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:34,299 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:34,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-04-05 07:37:34,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141384492] [2022-04-05 07:37:34,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:34,299 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-04-05 07:37:34,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:34,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-04-05 07:37:34,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-04-05 07:37:34,300 INFO L87 Difference]: Start difference. First operand 142 states and 188 transitions. Second operand has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-04-05 07:37:34,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:34,678 INFO L93 Difference]: Finished difference Result 185 states and 244 transitions. [2022-04-05 07:37:34,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-04-05 07:37:34,679 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) Word has length 127 [2022-04-05 07:37:34,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:34,680 INFO L225 Difference]: With dead ends: 185 [2022-04-05 07:37:34,680 INFO L226 Difference]: Without dead ends: 146 [2022-04-05 07:37:34,680 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2022-04-05 07:37:34,681 INFO L913 BasicCegarLoop]: 55 mSDtfsCounter, 28 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:34,681 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 270 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 07:37:34,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-04-05 07:37:34,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 142. [2022-04-05 07:37:34,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 75 states have (on average 1.0933333333333333) internal successors, (82), 76 states have internal predecessors, (82), 53 states have call successors, (53), 14 states have call predecessors, (53), 13 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 07:37:34,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2022-04-05 07:37:34,699 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 127 [2022-04-05 07:37:34,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:34,700 INFO L478 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2022-04-05 07:37:34,700 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.8125) internal successors, (45), 14 states have internal predecessors, (45), 9 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (34), 9 states have call predecessors, (34), 9 states have call successors, (34) [2022-04-05 07:37:34,700 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2022-04-05 07:37:34,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-04-05 07:37:34,701 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:34,701 INFO L499 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-04-05 07:37:34,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:34,911 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-04-05 07:37:34,911 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:34,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:34,912 INFO L85 PathProgramCache]: Analyzing trace with hash -928796440, now seen corresponding path program 2 times [2022-04-05 07:37:34,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:34,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722799125] [2022-04-05 07:37:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:34,920 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:34,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008552492] [2022-04-05 07:37:34,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-05 07:37:34,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:34,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:34,921 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:34,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-04-05 07:37:34,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-05 07:37:34,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 07:37:34,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 96 conjunts are in the unsatisfiable core [2022-04-05 07:37:34,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 119 proven. 151 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2022-04-05 07:37:36,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:36,958 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 154 proven. 12 refuted. 0 times theorem prover too weak. 449 trivial. 0 not checked. [2022-04-05 07:37:36,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:36,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722799125] [2022-04-05 07:37:36,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:36,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008552492] [2022-04-05 07:37:36,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008552492] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:36,959 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:36,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12] total 28 [2022-04-05 07:37:36,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479123902] [2022-04-05 07:37:36,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:36,960 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-04-05 07:37:36,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:36,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-04-05 07:37:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=620, Unknown=0, NotChecked=0, Total=756 [2022-04-05 07:37:36,960 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand has 28 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2022-04-05 07:37:38,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:38,680 INFO L93 Difference]: Finished difference Result 204 states and 264 transitions. [2022-04-05 07:37:38,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-04-05 07:37:38,680 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) Word has length 138 [2022-04-05 07:37:38,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:38,682 INFO L225 Difference]: With dead ends: 204 [2022-04-05 07:37:38,682 INFO L226 Difference]: Without dead ends: 159 [2022-04-05 07:37:38,682 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=335, Invalid=1387, Unknown=0, NotChecked=0, Total=1722 [2022-04-05 07:37:38,683 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 84 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:38,683 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 250 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-04-05 07:37:38,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-04-05 07:37:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2022-04-05 07:37:38,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 78 states have (on average 1.064102564102564) internal successors, (83), 78 states have internal predecessors, (83), 52 states have call successors, (52), 16 states have call predecessors, (52), 15 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-04-05 07:37:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 186 transitions. [2022-04-05 07:37:38,704 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 186 transitions. Word has length 138 [2022-04-05 07:37:38,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:38,705 INFO L478 AbstractCegarLoop]: Abstraction has 146 states and 186 transitions. [2022-04-05 07:37:38,705 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 24 states have (on average 2.0416666666666665) internal successors, (49), 21 states have internal predecessors, (49), 14 states have call successors, (37), 2 states have call predecessors, (37), 3 states have return successors, (36), 12 states have call predecessors, (36), 12 states have call successors, (36) [2022-04-05 07:37:38,705 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 186 transitions. [2022-04-05 07:37:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-04-05 07:37:38,706 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:38,706 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 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] [2022-04-05 07:37:38,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:38,923 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:38,923 INFO L403 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:38,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:38,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1469599656, now seen corresponding path program 3 times [2022-04-05 07:37:38,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:38,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822506220] [2022-04-05 07:37:38,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:38,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:38,931 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:38,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596701517] [2022-04-05 07:37:38,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-04-05 07:37:38,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:38,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:38,945 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:38,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-04-05 07:37:38,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-04-05 07:37:39,000 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 07:37:39,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 52 conjunts are in the unsatisfiable core [2022-04-05 07:37:39,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:39,822 INFO L134 CoverageAnalysis]: Checked inductivity of 762 backedges. 118 proven. 59 refuted. 0 times theorem prover too weak. 585 trivial. 0 not checked. [2022-04-05 07:37:39,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:40,051 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-04-05 07:37:40,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:40,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822506220] [2022-04-05 07:37:40,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:40,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596701517] [2022-04-05 07:37:40,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596701517] provided 0 perfect and 1 imperfect interpolant sequences [2022-04-05 07:37:40,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-04-05 07:37:40,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2022-04-05 07:37:40,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280782014] [2022-04-05 07:37:40,213 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:40,213 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-04-05 07:37:40,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:40,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-04-05 07:37:40,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-04-05 07:37:40,213 INFO L87 Difference]: Start difference. First operand 146 states and 186 transitions. Second operand has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-05 07:37:40,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:40,470 INFO L93 Difference]: Finished difference Result 182 states and 232 transitions. [2022-04-05 07:37:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-04-05 07:37:40,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 146 [2022-04-05 07:37:40,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:40,475 INFO L225 Difference]: With dead ends: 182 [2022-04-05 07:37:40,475 INFO L226 Difference]: Without dead ends: 180 [2022-04-05 07:37:40,475 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=382, Unknown=0, NotChecked=0, Total=462 [2022-04-05 07:37:40,475 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 39 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:40,476 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 133 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 07:37:40,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-04-05 07:37:40,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2022-04-05 07:37:40,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 96 states have (on average 1.0625) internal successors, (102), 96 states have internal predecessors, (102), 64 states have call successors, (64), 19 states have call predecessors, (64), 18 states have return successors, (63), 63 states have call predecessors, (63), 63 states have call successors, (63) [2022-04-05 07:37:40,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 229 transitions. [2022-04-05 07:37:40,502 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 229 transitions. Word has length 146 [2022-04-05 07:37:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:40,503 INFO L478 AbstractCegarLoop]: Abstraction has 179 states and 229 transitions. [2022-04-05 07:37:40,503 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 11 states have internal predecessors, (29), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-04-05 07:37:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 229 transitions. [2022-04-05 07:37:40,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-04-05 07:37:40,504 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:40,504 INFO L499 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 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] [2022-04-05 07:37:40,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:40,719 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-04-05 07:37:40,720 INFO L403 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1402624196, now seen corresponding path program 4 times [2022-04-05 07:37:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:40,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974549021] [2022-04-05 07:37:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:40,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:40,726 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:40,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1304857069] [2022-04-05 07:37:40,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-04-05 07:37:40,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:40,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:40,728 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:40,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-04-05 07:37:40,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-04-05 07:37:40,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 07:37:40,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 12 conjunts are in the unsatisfiable core [2022-04-05 07:37:40,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 246 proven. 51 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2022-04-05 07:37:41,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:41,390 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 60 proven. 51 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2022-04-05 07:37:41,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:41,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974549021] [2022-04-05 07:37:41,391 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:41,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304857069] [2022-04-05 07:37:41,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304857069] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:41,391 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:41,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2022-04-05 07:37:41,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472035287] [2022-04-05 07:37:41,391 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:41,391 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-04-05 07:37:41,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:41,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-04-05 07:37:41,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-04-05 07:37:41,392 INFO L87 Difference]: Start difference. First operand 179 states and 229 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2022-04-05 07:37:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:41,724 INFO L93 Difference]: Finished difference Result 214 states and 274 transitions. [2022-04-05 07:37:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 07:37:41,725 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) Word has length 151 [2022-04-05 07:37:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:41,726 INFO L225 Difference]: With dead ends: 214 [2022-04-05 07:37:41,726 INFO L226 Difference]: Without dead ends: 124 [2022-04-05 07:37:41,727 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 287 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2022-04-05 07:37:41,727 INFO L913 BasicCegarLoop]: 62 mSDtfsCounter, 28 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:41,727 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 288 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-05 07:37:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-04-05 07:37:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-04-05 07:37:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 69 states have (on average 1.0434782608695652) internal successors, (72), 69 states have internal predecessors, (72), 40 states have call successors, (40), 15 states have call predecessors, (40), 14 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-04-05 07:37:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 151 transitions. [2022-04-05 07:37:41,748 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 151 transitions. Word has length 151 [2022-04-05 07:37:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:41,748 INFO L478 AbstractCegarLoop]: Abstraction has 124 states and 151 transitions. [2022-04-05 07:37:41,749 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 15 states have internal predecessors, (44), 12 states have call successors, (46), 2 states have call predecessors, (46), 3 states have return successors, (45), 12 states have call predecessors, (45), 12 states have call successors, (45) [2022-04-05 07:37:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 151 transitions. [2022-04-05 07:37:41,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-04-05 07:37:41,750 INFO L491 BasicCegarLoop]: Found error trace [2022-04-05 07:37:41,750 INFO L499 BasicCegarLoop]: trace histogram [23, 22, 22, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:41,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:41,965 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-04-05 07:37:41,965 INFO L403 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-05 07:37:41,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-05 07:37:41,965 INFO L85 PathProgramCache]: Analyzing trace with hash 477503177, now seen corresponding path program 5 times [2022-04-05 07:37:41,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-05 07:37:41,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576092017] [2022-04-05 07:37:41,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-05 07:37:41,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-05 07:37:41,975 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-05 07:37:41,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [865679767] [2022-04-05 07:37:41,976 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-04-05 07:37:41,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-05 07:37:41,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-05 07:37:41,979 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-05 07:37:41,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-04-05 07:37:42,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-04-05 07:37:42,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-05 07:37:42,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 19 conjunts are in the unsatisfiable core [2022-04-05 07:37:42,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-05 07:37:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 234 proven. 68 refuted. 0 times theorem prover too weak. 813 trivial. 0 not checked. [2022-04-05 07:37:42,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-05 07:37:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 84 proven. 62 refuted. 0 times theorem prover too weak. 969 trivial. 0 not checked. [2022-04-05 07:37:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-05 07:37:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576092017] [2022-04-05 07:37:42,778 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-05 07:37:42,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [865679767] [2022-04-05 07:37:42,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [865679767] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-05 07:37:42,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-05 07:37:42,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 20 [2022-04-05 07:37:42,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390239279] [2022-04-05 07:37:42,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-04-05 07:37:42,779 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-05 07:37:42,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-05 07:37:42,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-05 07:37:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2022-04-05 07:37:42,780 INFO L87 Difference]: Start difference. First operand 124 states and 151 transitions. Second operand has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 15 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) [2022-04-05 07:37:43,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-05 07:37:43,170 INFO L93 Difference]: Finished difference Result 128 states and 154 transitions. [2022-04-05 07:37:43,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-04-05 07:37:43,171 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 15 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) Word has length 171 [2022-04-05 07:37:43,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-05 07:37:43,171 INFO L225 Difference]: With dead ends: 128 [2022-04-05 07:37:43,171 INFO L226 Difference]: Without dead ends: 0 [2022-04-05 07:37:43,172 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2022-04-05 07:37:43,172 INFO L913 BasicCegarLoop]: 65 mSDtfsCounter, 27 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-04-05 07:37:43,172 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 289 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-04-05 07:37:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-05 07:37:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-05 07:37:43,173 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) [2022-04-05 07:37:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-05 07:37:43,173 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 171 [2022-04-05 07:37:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-05 07:37:43,173 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-05 07:37:43,173 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.8) internal successors, (56), 18 states have internal predecessors, (56), 15 states have call successors, (57), 2 states have call predecessors, (57), 3 states have return successors, (56), 15 states have call predecessors, (56), 15 states have call successors, (56) [2022-04-05 07:37:43,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-05 07:37:43,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-05 07:37:43,176 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-05 07:37:43,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-04-05 07:37:43,391 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-04-05 07:37:43,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-05 07:37:57,456 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-05 07:37:57,456 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-04-05 07:37:57,456 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-04-05 07:37:57,457 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-05 07:37:57,457 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-05 07:37:57,457 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-04-05 07:37:57,457 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-04-05 07:37:57,457 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-04-05 07:37:57,457 INFO L882 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-04-05 07:37:57,457 INFO L882 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-04-05 07:37:57,457 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-04-05 07:37:57,457 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 74) the Hoare annotation is: true [2022-04-05 07:37:57,457 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-04-05 07:37:57,457 INFO L882 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-04-05 07:37:57,457 INFO L878 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-05 07:37:57,457 INFO L878 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 main_~y~0) (<= main_~y~0 2) (<= 0 main_~x~0) (<= main_~x~0 2)) [2022-04-05 07:37:57,457 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 main_~y~0) (<= 1 main_~x~0) (<= main_~y~0 2) (<= main_~x~0 2)) [2022-04-05 07:37:57,457 INFO L882 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-04-05 07:37:57,457 INFO L878 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= main_~s~0 1) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~a~0) (<= 0 main_~c~0) (= main_~b~0 main_~y~0) (<= (+ main_~c~0 main_~b~0) 2) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (< main_~c~0 main_~b~0) (= main_~xy~0 (* main_~y~0 main_~x~0)) (= main_~a~0 main_~x~0) (<= main_~x~0 2) (= main_~p~0 1)) [2022-04-05 07:37:57,458 INFO L878 garLoopResultBuilder]: At program point L41-1(lines 39 68) the Hoare annotation is: (let ((.cse0 (< main_~b~0 main_~a~0)) (.cse1 (<= 1 main_~x~0)) (.cse2 (<= main_~y~0 2)) (.cse6 (<= 1 main_~y~0)) (.cse7 (* main_~b~0 2)) (.cse5 (<= main_~b~0 main_~c~0)) (.cse3 (= main_~s~0 1)) (.cse4 (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (.cse8 (<= 0 main_~c~0)) (.cse10 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse9 (<= main_~x~0 2))) (or (and .cse0 (= (+ (* main_~x~0 2) main_~b~0) main_~y~0) .cse1 .cse2 .cse3 .cse4 (< main_~x~0 main_~y~0) (= (+ main_~q~0 2) 0) .cse5 .cse6) (and .cse0 (< (* main_~c~0 2) 2) .cse1 .cse2 (< .cse7 2) .cse4 .cse8 (<= 0 main_~b~0) .cse6 (= (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)) 0) .cse9) (and (= main_~p~0 0) (= main_~b~0 (+ main_~x~0 (* main_~a~0 main_~s~0))) (= main_~r~0 1) (= main_~a~0 main_~y~0) (< main_~c~0 .cse7) (= main_~b~0 main_~x~0) .cse5 (< main_~x~0 main_~a~0) (<= main_~a~0 2) (= main_~q~0 1) .cse10) (and .cse3 .cse4 (<= 1 main_~a~0) .cse8 (= main_~b~0 main_~y~0) (<= (+ main_~c~0 main_~b~0) 2) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (< main_~c~0 main_~b~0) .cse10 (= main_~a~0 main_~x~0) .cse9 (= main_~p~0 1)))) [2022-04-05 07:37:57,458 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= main_~s~0 1) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~a~0) (<= 0 main_~c~0) (= main_~b~0 main_~y~0) (<= (+ main_~c~0 main_~b~0) 2) (= main_~yy~0 (* main_~y~0 main_~y~0)) (= main_~q~0 0) (< main_~c~0 main_~b~0) (= main_~xy~0 (* main_~y~0 main_~x~0)) (= main_~a~0 main_~x~0) (<= main_~x~0 2) (= main_~p~0 1)) [2022-04-05 07:37:57,458 INFO L878 garLoopResultBuilder]: At program point L41-2(lines 41 68) the Hoare annotation is: (and (<= 1 main_~x~0) (<= main_~y~0 2) (= main_~b~0 0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (<= 1 main_~y~0) (= (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)) 0)) [2022-04-05 07:37:57,458 INFO L882 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2022-04-05 07:37:57,458 INFO L878 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (and (<= 1 main_~x~0) (= main_~a~0 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0))) (or (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) (= main_~b~0 0)) (<= 1 main_~y~0)) [2022-04-05 07:37:57,458 INFO L878 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: (let ((.cse20 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse1 (<= 1 main_~x~0)) (.cse3 (= main_~r~0 1)) (.cse4 (= main_~a~0 main_~y~0)) (.cse5 (< main_~x~0 main_~a~0)) (.cse6 (<= 1 main_~b~0)) (.cse7 (= main_~q~0 1)) (.cse8 (< main_~b~0 2)) (.cse11 (<= 1 main_~a~0)) (.cse19 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse10 (= main_~s~0 1)) (.cse2 (= main_~a~0 .cse20)) (.cse21 (<= 0 main_~c~0)) (.cse12 (= main_~b~0 main_~y~0)) (.cse13 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse14 (= main_~q~0 0)) (.cse15 (<= 1 main_~y~0)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse16 (= main_~a~0 main_~x~0)) (.cse17 (<= main_~x~0 2)) (.cse18 (= main_~p~0 1))) (or (and .cse0 (<= 1 main_~c~0) .cse1 (= main_~b~0 (+ main_~x~0 (* main_~a~0 main_~s~0))) .cse2 .cse3 .cse4 (<= main_~c~0 2) .cse5 (<= main_~a~0 2) .cse6 .cse7 .cse8 .cse9) (and (<= main_~y~0 2) (= main_~k~0 0) .cse10 .cse2 .cse11 .cse12 .cse13 .cse14 .cse15 .cse9 .cse16 (= main_~c~0 main_~x~0) .cse17 .cse18) (and .cse0 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 .cse3 .cse4 .cse5 (= main_~k~0 2) .cse19 .cse6 .cse7 .cse8 .cse9) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse20) .cse10 .cse2 .cse11 .cse21 .cse12 .cse13 .cse19 .cse14 .cse15 .cse9 .cse16 .cse17 .cse18) (and .cse10 .cse2 .cse21 .cse12 (= main_~k~0 1) .cse13 .cse14 .cse15 .cse9 .cse16 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse17 .cse18)))) [2022-04-05 07:37:57,458 INFO L882 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2022-04-05 07:37:57,458 INFO L882 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2022-04-05 07:37:57,458 INFO L878 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse20 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse1 (<= 1 main_~x~0)) (.cse3 (= main_~r~0 1)) (.cse4 (= main_~a~0 main_~y~0)) (.cse5 (< main_~x~0 main_~a~0)) (.cse6 (<= 1 main_~b~0)) (.cse7 (= main_~q~0 1)) (.cse8 (< main_~b~0 2)) (.cse11 (<= 1 main_~a~0)) (.cse19 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse10 (= main_~s~0 1)) (.cse2 (= main_~a~0 .cse20)) (.cse21 (<= 0 main_~c~0)) (.cse12 (= main_~b~0 main_~y~0)) (.cse13 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse14 (= main_~q~0 0)) (.cse15 (<= 1 main_~y~0)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse16 (= main_~a~0 main_~x~0)) (.cse17 (<= main_~x~0 2)) (.cse18 (= main_~p~0 1))) (or (and .cse0 (<= 1 main_~c~0) .cse1 (= main_~b~0 (+ main_~x~0 (* main_~a~0 main_~s~0))) .cse2 .cse3 .cse4 (<= main_~c~0 2) .cse5 (<= main_~a~0 2) .cse6 .cse7 .cse8 .cse9) (and (<= main_~y~0 2) (= main_~k~0 0) .cse10 .cse2 .cse11 .cse12 .cse13 .cse14 .cse15 .cse9 .cse16 (= main_~c~0 main_~x~0) .cse17 .cse18) (and .cse0 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 .cse3 .cse4 .cse5 (= main_~k~0 2) .cse19 .cse6 .cse7 .cse8 .cse9) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse20) .cse10 .cse2 .cse11 .cse21 .cse12 .cse13 .cse19 .cse14 .cse15 .cse9 .cse16 .cse17 .cse18) (and .cse10 .cse2 .cse21 .cse12 (= main_~k~0 1) .cse13 .cse14 .cse15 .cse9 .cse16 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse17 .cse18)))) [2022-04-05 07:37:57,458 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 18 74) no Hoare annotation was computed. [2022-04-05 07:37:57,458 INFO L878 garLoopResultBuilder]: At program point L48-1(line 48) the Hoare annotation is: (let ((.cse20 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse1 (<= 1 main_~x~0)) (.cse3 (= main_~r~0 1)) (.cse4 (= main_~a~0 main_~y~0)) (.cse5 (< main_~x~0 main_~a~0)) (.cse6 (<= 1 main_~b~0)) (.cse7 (= main_~q~0 1)) (.cse8 (< main_~b~0 2)) (.cse11 (<= 1 main_~a~0)) (.cse19 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse10 (= main_~s~0 1)) (.cse2 (= main_~a~0 .cse20)) (.cse21 (<= 0 main_~c~0)) (.cse12 (= main_~b~0 main_~y~0)) (.cse13 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse14 (= main_~q~0 0)) (.cse15 (<= 1 main_~y~0)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse16 (= main_~a~0 main_~x~0)) (.cse17 (<= main_~x~0 2)) (.cse18 (= main_~p~0 1))) (or (and .cse0 (<= 1 main_~c~0) .cse1 (= main_~b~0 (+ main_~x~0 (* main_~a~0 main_~s~0))) .cse2 .cse3 .cse4 (<= main_~c~0 2) .cse5 (<= main_~a~0 2) .cse6 .cse7 .cse8 .cse9) (and (<= main_~y~0 2) (= main_~k~0 0) .cse10 .cse2 .cse11 .cse12 .cse13 .cse14 .cse15 .cse9 .cse16 (= main_~c~0 main_~x~0) .cse17 .cse18) (and .cse0 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 .cse3 .cse4 .cse5 (= main_~k~0 2) .cse19 .cse6 .cse7 .cse8 .cse9) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse20) .cse10 .cse2 .cse11 .cse21 .cse12 .cse13 .cse19 .cse14 .cse15 .cse9 .cse16 .cse17 .cse18) (and .cse10 .cse2 .cse21 .cse12 (= main_~k~0 1) .cse13 .cse14 .cse15 .cse9 .cse16 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse17 .cse18)))) [2022-04-05 07:37:57,458 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 18 74) no Hoare annotation was computed. [2022-04-05 07:37:57,458 INFO L878 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse20 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse0 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse1 (<= 1 main_~x~0)) (.cse3 (= main_~r~0 1)) (.cse4 (= main_~a~0 main_~y~0)) (.cse5 (< main_~x~0 main_~a~0)) (.cse6 (<= 1 main_~b~0)) (.cse7 (= main_~q~0 1)) (.cse8 (< main_~b~0 2)) (.cse11 (<= 1 main_~a~0)) (.cse19 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse10 (= main_~s~0 1)) (.cse2 (= main_~a~0 .cse20)) (.cse21 (<= 0 main_~c~0)) (.cse12 (= main_~b~0 main_~y~0)) (.cse13 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse14 (= main_~q~0 0)) (.cse15 (<= 1 main_~y~0)) (.cse9 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse16 (= main_~a~0 main_~x~0)) (.cse17 (<= main_~x~0 2)) (.cse18 (= main_~p~0 1))) (or (and .cse0 (<= 1 main_~c~0) .cse1 (= main_~b~0 (+ main_~x~0 (* main_~a~0 main_~s~0))) .cse2 .cse3 .cse4 (<= main_~c~0 2) .cse5 (<= main_~a~0 2) .cse6 .cse7 .cse8 .cse9) (and (<= main_~y~0 2) (= main_~k~0 0) .cse10 .cse2 .cse11 .cse12 .cse13 .cse14 .cse15 .cse9 .cse16 (= main_~c~0 main_~x~0) .cse17 .cse18) (and .cse0 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0))) .cse1 .cse2 .cse3 .cse4 .cse5 (= main_~k~0 2) .cse19 .cse6 .cse7 .cse8 .cse9) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse20) .cse10 .cse2 .cse11 .cse21 .cse12 .cse13 .cse19 .cse14 .cse15 .cse9 .cse16 .cse17 .cse18) (and .cse10 .cse2 .cse21 .cse12 (= main_~k~0 1) .cse13 .cse14 .cse15 .cse9 .cse16 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse17 .cse18)))) [2022-04-05 07:37:57,459 INFO L878 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse21 (+ (* main_~y~0 main_~r~0) (* main_~p~0 main_~x~0)))) (let ((.cse11 (= main_~a~0 (+ main_~c~0 (* main_~b~0 main_~k~0)))) (.cse12 (= main_~b~0 (+ (* main_~q~0 main_~x~0) (* main_~y~0 main_~s~0)))) (.cse13 (<= 1 main_~x~0)) (.cse14 (= main_~r~0 1)) (.cse15 (= main_~a~0 main_~y~0)) (.cse16 (< main_~x~0 main_~a~0)) (.cse17 (<= 1 main_~b~0)) (.cse18 (= main_~q~0 1)) (.cse19 (< main_~b~0 2)) (.cse2 (<= 1 main_~a~0)) (.cse20 (<= (+ main_~c~0 (* main_~b~0 2)) 2)) (.cse0 (= main_~s~0 1)) (.cse1 (= main_~a~0 .cse21)) (.cse22 (<= 0 main_~c~0)) (.cse3 (= main_~b~0 main_~y~0)) (.cse4 (= main_~yy~0 (* main_~y~0 main_~y~0))) (.cse5 (= main_~q~0 0)) (.cse6 (<= 1 main_~y~0)) (.cse7 (= main_~xy~0 (* main_~y~0 main_~x~0))) (.cse8 (= main_~a~0 main_~x~0)) (.cse9 (<= main_~x~0 2)) (.cse10 (= main_~p~0 1))) (or (and (<= main_~y~0 2) (= main_~k~0 0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~c~0 main_~x~0) .cse9 .cse10) (and .cse11 (<= 1 main_~c~0) .cse12 .cse13 .cse1 .cse14 .cse15 (<= main_~c~0 2) .cse16 (<= main_~a~0 2) .cse17 .cse18 .cse19 .cse7) (and .cse11 .cse12 .cse13 .cse1 .cse14 .cse15 .cse16 (= main_~k~0 2) .cse20 .cse17 .cse18 .cse19 .cse7) (and (= (+ (* main_~k~0 main_~y~0 main_~s~0) (* main_~q~0 main_~k~0 main_~x~0)) .cse21) .cse0 .cse1 .cse2 .cse22 .cse3 .cse4 .cse20 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse0 .cse1 .cse22 .cse3 (= main_~k~0 1) .cse4 .cse5 .cse6 .cse7 .cse8 (= main_~x~0 (+ main_~c~0 main_~y~0)) .cse9 .cse10)))) [2022-04-05 07:37:57,459 INFO L882 garLoopResultBuilder]: For program point L51(lines 47 56) no Hoare annotation was computed. [2022-04-05 07:37:57,459 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-04-05 07:37:57,459 INFO L882 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-04-05 07:37:57,459 INFO L882 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-04-05 07:37:57,459 INFO L882 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-04-05 07:37:57,459 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-04-05 07:37:57,459 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-04-05 07:37:57,462 INFO L719 BasicCegarLoop]: Path program histogram: [5, 4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-04-05 07:37:57,463 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-05 07:37:57,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 07:37:57 BasicIcfg [2022-04-05 07:37:57,488 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-05 07:37:57,488 INFO L158 Benchmark]: Toolchain (without parser) took 36814.96ms. Allocated memory was 203.4MB in the beginning and 319.8MB in the end (delta: 116.4MB). Free memory was 149.0MB in the beginning and 269.9MB in the end (delta: -120.9MB). Peak memory consumption was 163.6MB. Max. memory is 8.0GB. [2022-04-05 07:37:57,488 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 203.4MB. Free memory was 165.2MB in the beginning and 165.1MB in the end (delta: 67.2kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-05 07:37:57,489 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.69ms. Allocated memory was 203.4MB in the beginning and 266.3MB in the end (delta: 62.9MB). Free memory was 148.8MB in the beginning and 239.0MB in the end (delta: -90.2MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB. [2022-04-05 07:37:57,489 INFO L158 Benchmark]: Boogie Preprocessor took 35.28ms. Allocated memory is still 266.3MB. Free memory was 239.0MB in the beginning and 237.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-05 07:37:57,489 INFO L158 Benchmark]: RCFGBuilder took 299.81ms. Allocated memory is still 266.3MB. Free memory was 237.3MB in the beginning and 225.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-05 07:37:57,489 INFO L158 Benchmark]: IcfgTransformer took 33.42ms. Allocated memory is still 266.3MB. Free memory was 225.8MB in the beginning and 224.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-05 07:37:57,489 INFO L158 Benchmark]: TraceAbstraction took 36126.08ms. Allocated memory was 266.3MB in the beginning and 319.8MB in the end (delta: 53.5MB). Free memory was 223.7MB in the beginning and 269.9MB in the end (delta: -46.3MB). Peak memory consumption was 175.4MB. Max. memory is 8.0GB. [2022-04-05 07:37:57,490 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 203.4MB. Free memory was 165.2MB in the beginning and 165.1MB in the end (delta: 67.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 300.69ms. Allocated memory was 203.4MB in the beginning and 266.3MB in the end (delta: 62.9MB). Free memory was 148.8MB in the beginning and 239.0MB in the end (delta: -90.2MB). Peak memory consumption was 4.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.28ms. Allocated memory is still 266.3MB. Free memory was 239.0MB in the beginning and 237.6MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 299.81ms. Allocated memory is still 266.3MB. Free memory was 237.3MB in the beginning and 225.8MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 33.42ms. Allocated memory is still 266.3MB. Free memory was 225.8MB in the beginning and 224.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 36126.08ms. Allocated memory was 266.3MB in the beginning and 319.8MB in the end (delta: 53.5MB). Free memory was 223.7MB in the beginning and 269.9MB in the end (delta: -46.3MB). Peak memory consumption was 175.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: 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 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 36.0s, OverallIterations: 18, TraceHistogramMax: 23, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 618 SdHoareTripleChecker+Valid, 4.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 525 mSDsluCounter, 3750 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2893 mSDsCounter, 827 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4873 IncrementalHoareTripleChecker+Invalid, 5700 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 827 mSolverCounterUnsat, 857 mSDtfsCounter, 4873 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2853 GetRequests, 2538 SyntacticMatches, 19 SemanticMatches, 296 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=204occurred in iteration=11, InterpolantAutomatonStates: 201, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 18 MinimizatonAttempts, 95 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 193 PreInvPairs, 249 NumberOfFragments, 1890 HoareAnnotationTreeSize, 193 FomulaSimplifications, 2296 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 20 FomulaSimplificationsInter, 7197 FormulaSimplificationTreeSizeReductionInter, 13.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 1642 NumberOfCodeBlocks, 1520 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2686 ConstructedInterpolants, 0 QuantifiedInterpolants, 9132 SizeOfPredicates, 113 NumberOfNonLiveVariables, 3743 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 29 InterpolantComputations, 4 PerfectInterpolantSequences, 8794/9490 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: 39]: Loop Invariant Derived loop invariant: (((((((((((b < a && x * 2 + b == y) && 1 <= x) && y <= 2) && s == 1) && a == y * r + p * x) && x < y) && q + 2 == 0) && b <= c) && 1 <= y) || ((((((((((b < a && c * 2 < 2) && 1 <= x) && y <= 2) && b * 2 < 2) && a == y * r + p * x) && 0 <= c) && 0 <= b) && 1 <= y) && q * x + y * s == 0) && x <= 2)) || ((((((((((p == 0 && b == x + a * s) && r == 1) && a == y) && c < b * 2) && b == x) && b <= c) && x < a) && a <= 2) && q == 1) && xy == y * x)) || ((((((((((((s == 1 && a == y * r + p * x) && 1 <= a) && 0 <= c) && b == y) && c + b <= 2) && yy == y * y) && q == 0) && c < b) && xy == y * x) && a == x) && x <= 2) && p == 1) - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((((((((((((((((a == c + b * k && 1 <= c) && 1 <= x) && b == x + a * s) && a == y * r + p * x) && r == 1) && a == y) && c <= 2) && x < a) && a <= 2) && 1 <= b) && q == 1) && b < 2) && xy == y * x) || (((((((((((((y <= 2 && k == 0) && s == 1) && a == y * r + p * x) && 1 <= a) && b == y) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && c == x) && x <= 2) && p == 1)) || ((((((((((((a == c + b * k && b == q * x + y * s) && 1 <= x) && a == y * r + p * x) && r == 1) && a == y) && x < a) && k == 2) && c + b * 2 <= 2) && 1 <= b) && q == 1) && b < 2) && xy == y * x)) || (((((((((((((k * y * s + q * k * x == y * r + p * x && s == 1) && a == y * r + p * x) && 1 <= a) && 0 <= c) && b == y) && yy == y * y) && c + b * 2 <= 2) && q == 0) && 1 <= y) && xy == y * x) && a == x) && x <= 2) && p == 1)) || ((((((((((((s == 1 && a == y * r + p * x) && 0 <= c) && b == y) && k == 1) && yy == y * y) && q == 0) && 1 <= y) && xy == y * x) && a == x) && x == c + y) && x <= 2) && p == 1) RESULT: Ultimate proved your program to be correct! [2022-04-05 07:37:57,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...