/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/hard-ll_valuebound50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 10:38:29,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 10:38:29,887 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 10:38:29,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 10:38:29,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 10:38:29,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 10:38:29,924 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 10:38:29,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 10:38:29,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 10:38:29,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 10:38:29,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 10:38:29,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 10:38:29,945 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 10:38:29,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 10:38:29,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 10:38:29,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 10:38:29,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 10:38:29,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 10:38:29,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 10:38:29,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 10:38:29,957 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 10:38:29,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 10:38:29,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 10:38:29,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 10:38:29,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 10:38:29,964 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 10:38:29,970 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 10:38:29,970 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 10:38:29,971 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 10:38:29,972 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 10:38:29,991 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 10:38:29,992 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 10:38:29,993 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 10:38:29,993 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 10:38:29,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 10:38:29,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 10:38:29,994 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 10:38:29,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 10:38:29,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 10:38:29,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 10:38:29,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 10:38:29,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 10:38:29,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 10:38:29,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 10:38:29,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 10:38:29,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 10:38:29,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 10:38:29,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 10:38:29,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 10:38:29,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 10:38:29,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 10:38:29,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 10:38:29,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 10:38:29,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 10:38:29,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 10:38:29,997 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 10:38:29,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 10:38:29,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 10:38:29,997 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 10:38:29,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 10:38:30,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 10:38:30,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 10:38:30,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 10:38:30,198 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 10:38:30,199 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 10:38:30,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound50.c [2022-03-20 10:38:30,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13113dd48/1c3ed6cd2c674afa9ae60daf937581b4/FLAG0f5b1b987 [2022-03-20 10:38:30,551 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 10:38:30,551 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard-ll_valuebound50.c [2022-03-20 10:38:30,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13113dd48/1c3ed6cd2c674afa9ae60daf937581b4/FLAG0f5b1b987 [2022-03-20 10:38:30,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13113dd48/1c3ed6cd2c674afa9ae60daf937581b4 [2022-03-20 10:38:30,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 10:38:30,985 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 10:38:30,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 10:38:30,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 10:38:30,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 10:38:30,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 10:38:30" (1/1) ... [2022-03-20 10:38:31,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7693e848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31, skipping insertion in model container [2022-03-20 10:38:31,000 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 10:38:30" (1/1) ... [2022-03-20 10:38:31,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 10:38:31,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 10:38:31,137 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/hard-ll_valuebound50.c[538,551] [2022-03-20 10:38:31,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 10:38:31,152 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 10:38:31,159 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/hard-ll_valuebound50.c[538,551] [2022-03-20 10:38:31,164 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 10:38:31,171 INFO L208 MainTranslator]: Completed translation [2022-03-20 10:38:31,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31 WrapperNode [2022-03-20 10:38:31,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 10:38:31,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 10:38:31,177 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 10:38:31,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 10:38:31,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,189 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,201 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,206 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,208 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 10:38:31,214 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 10:38:31,214 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 10:38:31,214 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 10:38:31,215 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 10:38:31,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:38:31,250 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) [2022-03-20 10:38:31,268 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 [2022-03-20 10:38:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 10:38:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 10:38:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 10:38:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 10:38:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 10:38:31,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 10:38:31,282 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 10:38:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 10:38:31,283 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 10:38:31,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 10:38:31,331 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 10:38:31,332 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 10:38:31,459 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 10:38:31,462 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 10:38:31,463 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 10:38:31,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 10:38:31 BoogieIcfgContainer [2022-03-20 10:38:31,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 10:38:31,464 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 10:38:31,464 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 10:38:31,465 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 10:38:31,467 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 10:38:31" (1/1) ... [2022-03-20 10:38:31,468 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 10:38:31,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 10:38:31 BasicIcfg [2022-03-20 10:38:31,479 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 10:38:31,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 10:38:31,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 10:38:31,483 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 10:38:31,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 10:38:30" (1/4) ... [2022-03-20 10:38:31,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f89727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 10:38:31, skipping insertion in model container [2022-03-20 10:38:31,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 10:38:31" (2/4) ... [2022-03-20 10:38:31,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f89727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 10:38:31, skipping insertion in model container [2022-03-20 10:38:31,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 10:38:31" (3/4) ... [2022-03-20 10:38:31,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f89727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 10:38:31, skipping insertion in model container [2022-03-20 10:38:31,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 10:38:31" (4/4) ... [2022-03-20 10:38:31,485 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound50.cqvasr [2022-03-20 10:38:31,488 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 10:38:31,488 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 10:38:31,542 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 10:38:31,547 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 [2022-03-20 10:38:31,547 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 10:38:31,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-03-20 10:38:31,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 10:38:31,576 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:38:31,576 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:38:31,577 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:38:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:38:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1011787902, now seen corresponding path program 1 times [2022-03-20 10:38:31,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:38:31,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078990217] [2022-03-20 10:38:31,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:31,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:38:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 10:38:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:31,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 10:38:31,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:31,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 10:38:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:31,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 10:38:31,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:31,771 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 10:38:31,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:38:31,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078990217] [2022-03-20 10:38:31,772 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078990217] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 10:38:31,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 10:38:31,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 10:38:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338871089] [2022-03-20 10:38:31,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:38:31,776 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 10:38:31,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:38:31,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 10:38:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 10:38:31,798 INFO L87 Difference]: Start difference. First operand has 38 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 10:38:31,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:38:31,890 INFO L93 Difference]: Finished difference Result 69 states and 110 transitions. [2022-03-20 10:38:31,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 10:38:31,891 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2022-03-20 10:38:31,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:38:31,896 INFO L225 Difference]: With dead ends: 69 [2022-03-20 10:38:31,896 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 10:38:31,898 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 10:38:31,900 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 10:38:31,901 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 41 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 10:38:31,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 10:38:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-20 10:38:31,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 18 states have internal predecessors, (21), 12 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 10:38:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2022-03-20 10:38:31,924 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 28 [2022-03-20 10:38:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:38:31,924 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2022-03-20 10:38:31,925 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, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 10:38:31,925 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2022-03-20 10:38:31,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-20 10:38:31,926 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:38:31,926 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:38:31,927 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 10:38:31,927 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:38:31,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:38:31,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1710049411, now seen corresponding path program 1 times [2022-03-20 10:38:31,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:38:31,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195264405] [2022-03-20 10:38:31,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:31,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:38:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 10:38:31,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 10:38:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 10:38:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 10:38:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,032 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 10:38:32,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:38:32,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195264405] [2022-03-20 10:38:32,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195264405] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 10:38:32,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 10:38:32,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 10:38:32,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118761239] [2022-03-20 10:38:32,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:38:32,047 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 10:38:32,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:38:32,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 10:38:32,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 10:38:32,048 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 10:38:32,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:38:32,226 INFO L93 Difference]: Finished difference Result 46 states and 60 transitions. [2022-03-20 10:38:32,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 10:38:32,226 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-03-20 10:38:32,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:38:32,227 INFO L225 Difference]: With dead ends: 46 [2022-03-20 10:38:32,227 INFO L226 Difference]: Without dead ends: 44 [2022-03-20 10:38:32,227 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 10:38:32,228 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 38 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 10:38:32,229 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 48 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 10:38:32,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-20 10:38:32,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2022-03-20 10:38:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 10:38:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2022-03-20 10:38:32,237 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 46 transitions. Word has length 28 [2022-03-20 10:38:32,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:38:32,237 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 46 transitions. [2022-03-20 10:38:32,237 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-20 10:38:32,237 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 46 transitions. [2022-03-20 10:38:32,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-20 10:38:32,238 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:38:32,238 INFO L499 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:38:32,238 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 10:38:32,238 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:38:32,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:38:32,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1042498848, now seen corresponding path program 1 times [2022-03-20 10:38:32,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:38:32,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961159478] [2022-03-20 10:38:32,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:32,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:38:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 10:38:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 10:38:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 10:38:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-03-20 10:38:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 10:38:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-03-20 10:38:32,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:38:32,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961159478] [2022-03-20 10:38:32,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961159478] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 10:38:32,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 10:38:32,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 10:38:32,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256921951] [2022-03-20 10:38:32,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:38:32,362 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 10:38:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:38:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 10:38:32,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 10:38:32,363 INFO L87 Difference]: Start difference. First operand 37 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 10:38:32,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:38:32,515 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-03-20 10:38:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 10:38:32,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2022-03-20 10:38:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:38:32,517 INFO L225 Difference]: With dead ends: 50 [2022-03-20 10:38:32,517 INFO L226 Difference]: Without dead ends: 48 [2022-03-20 10:38:32,517 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 10:38:32,518 INFO L913 BasicCegarLoop]: 31 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 10:38:32,518 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 48 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 10:38:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-20 10:38:32,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 41. [2022-03-20 10:38:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 states have internal predecessors, (27), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-03-20 10:38:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2022-03-20 10:38:32,525 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 33 [2022-03-20 10:38:32,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:38:32,526 INFO L478 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2022-03-20 10:38:32,526 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-20 10:38:32,526 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2022-03-20 10:38:32,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-20 10:38:32,526 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:38:32,527 INFO L499 BasicCegarLoop]: trace histogram [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] [2022-03-20 10:38:32,527 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 10:38:32,527 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:38:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:38:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1436069466, now seen corresponding path program 1 times [2022-03-20 10:38:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:38:32,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190462161] [2022-03-20 10:38:32,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:32,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:38:32,538 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:38:32,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301926695] [2022-03-20 10:38:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:32,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:32,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:38:32,540 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) [2022-03-20 10:38:32,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 10:38:32,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:32,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-20 10:38:32,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:38:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-03-20 10:38:32,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 10:38:32,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:38:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190462161] [2022-03-20 10:38:32,819 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:38:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301926695] [2022-03-20 10:38:32,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301926695] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 10:38:32,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 10:38:32,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-20 10:38:32,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629460837] [2022-03-20 10:38:32,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:38:32,820 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-20 10:38:32,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:38:32,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-20 10:38:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-20 10:38:32,821 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 10:38:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:38:32,911 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2022-03-20 10:38:32,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 10:38:32,911 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2022-03-20 10:38:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:38:32,912 INFO L225 Difference]: With dead ends: 69 [2022-03-20 10:38:32,912 INFO L226 Difference]: Without dead ends: 55 [2022-03-20 10:38:32,913 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-03-20 10:38:32,913 INFO L913 BasicCegarLoop]: 40 mSDtfsCounter, 20 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 10:38:32,914 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 225 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 10:38:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-20 10:38:32,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-20 10:38:32,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 30 states have (on average 1.1666666666666667) internal successors, (35), 32 states have internal predecessors, (35), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-03-20 10:38:32,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2022-03-20 10:38:32,922 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 38 [2022-03-20 10:38:32,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:38:32,922 INFO L478 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2022-03-20 10:38:32,922 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-03-20 10:38:32,923 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2022-03-20 10:38:32,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-20 10:38:32,923 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:38:32,923 INFO L499 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2022-03-20 10:38:32,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 10:38:33,124 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:33,124 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:38:33,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:38:33,125 INFO L85 PathProgramCache]: Analyzing trace with hash 5711864, now seen corresponding path program 1 times [2022-03-20 10:38:33,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:38:33,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773147357] [2022-03-20 10:38:33,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:33,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:38:33,134 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:38:33,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1174743120] [2022-03-20 10:38:33,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:38:33,147 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) [2022-03-20 10:38:33,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 10:38:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:33,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-20 10:38:33,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:38:33,396 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-03-20 10:38:33,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:38:33,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-03-20 10:38:33,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:38:33,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773147357] [2022-03-20 10:38:33,545 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:38:33,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1174743120] [2022-03-20 10:38:33,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1174743120] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 10:38:33,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 10:38:33,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 11 [2022-03-20 10:38:33,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22910364] [2022-03-20 10:38:33,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:38:33,546 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 10:38:33,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:38:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 10:38:33,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-03-20 10:38:33,547 INFO L87 Difference]: Start difference. First operand 55 states and 68 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 10:38:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:38:33,598 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2022-03-20 10:38:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 10:38:33,598 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2022-03-20 10:38:33,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:38:33,601 INFO L225 Difference]: With dead ends: 68 [2022-03-20 10:38:33,601 INFO L226 Difference]: Without dead ends: 66 [2022-03-20 10:38:33,601 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-03-20 10:38:33,603 INFO L913 BasicCegarLoop]: 42 mSDtfsCounter, 16 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 10:38:33,604 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 145 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 10:38:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-20 10:38:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2022-03-20 10:38:33,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 38 states have internal predecessors, (43), 20 states have call successors, (20), 8 states have call predecessors, (20), 7 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-03-20 10:38:33,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2022-03-20 10:38:33,619 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 45 [2022-03-20 10:38:33,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:38:33,620 INFO L478 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2022-03-20 10:38:33,620 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, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 10:38:33,620 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2022-03-20 10:38:33,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-03-20 10:38:33,621 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:38:33,621 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:38:33,642 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 10:38:33,835 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:33,835 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:38:33,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:38:33,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1597443315, now seen corresponding path program 1 times [2022-03-20 10:38:33,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:38:33,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573849982] [2022-03-20 10:38:33,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:33,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:38:33,845 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:38:33,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1228956737] [2022-03-20 10:38:33,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:33,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:33,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:38:33,846 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) [2022-03-20 10:38:33,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-20 10:38:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:33,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-20 10:38:33,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:38:34,058 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-03-20 10:38:34,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:38:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-03-20 10:38:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:38:34,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573849982] [2022-03-20 10:38:34,178 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:38:34,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228956737] [2022-03-20 10:38:34,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228956737] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 10:38:34,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-20 10:38:34,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2022-03-20 10:38:34,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061734798] [2022-03-20 10:38:34,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:38:34,181 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 10:38:34,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:38:34,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 10:38:34,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 10:38:34,182 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 10:38:34,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:38:34,219 INFO L93 Difference]: Finished difference Result 76 states and 95 transitions. [2022-03-20 10:38:34,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 10:38:34,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 55 [2022-03-20 10:38:34,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:38:34,222 INFO L225 Difference]: With dead ends: 76 [2022-03-20 10:38:34,222 INFO L226 Difference]: Without dead ends: 74 [2022-03-20 10:38:34,222 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-20 10:38:34,224 INFO L913 BasicCegarLoop]: 41 mSDtfsCounter, 8 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 141 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 [2022-03-20 10:38:34,225 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 141 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 10:38:34,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-03-20 10:38:34,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-03-20 10:38:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 40 states have (on average 1.175) internal successors, (47), 43 states have internal predecessors, (47), 22 states have call successors, (22), 9 states have call predecessors, (22), 8 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-03-20 10:38:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 88 transitions. [2022-03-20 10:38:34,247 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 88 transitions. Word has length 55 [2022-03-20 10:38:34,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:38:34,248 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 88 transitions. [2022-03-20 10:38:34,249 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-03-20 10:38:34,249 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 88 transitions. [2022-03-20 10:38:34,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-03-20 10:38:34,252 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:38:34,252 INFO L499 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 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] [2022-03-20 10:38:34,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-20 10:38:34,463 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:34,463 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:38:34,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:38:34,464 INFO L85 PathProgramCache]: Analyzing trace with hash 810354846, now seen corresponding path program 1 times [2022-03-20 10:38:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:38:34,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733281298] [2022-03-20 10:38:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:34,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:38:34,484 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:38:34,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172204073] [2022-03-20 10:38:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:34,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:34,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:38:34,485 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) [2022-03-20 10:38:34,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-20 10:38:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:34,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 10:38:34,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:38:34,618 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-03-20 10:38:34,619 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 10:38:34,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:38:34,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733281298] [2022-03-20 10:38:34,619 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:38:34,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172204073] [2022-03-20 10:38:34,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172204073] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 10:38:34,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 10:38:34,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 10:38:34,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103299792] [2022-03-20 10:38:34,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:38:34,623 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 10:38:34,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:38:34,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 10:38:34,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-20 10:38:34,623 INFO L87 Difference]: Start difference. First operand 71 states and 88 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 10:38:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:38:34,665 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2022-03-20 10:38:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 10:38:34,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2022-03-20 10:38:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:38:34,668 INFO L225 Difference]: With dead ends: 79 [2022-03-20 10:38:34,668 INFO L226 Difference]: Without dead ends: 72 [2022-03-20 10:38:34,668 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-20 10:38:34,669 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 10:38:34,669 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 132 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 10:38:34,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-20 10:38:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2022-03-20 10:38:34,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 41 states have (on average 1.146341463414634) internal successors, (47), 44 states have internal predecessors, (47), 20 states have call successors, (20), 10 states have call predecessors, (20), 9 states have return successors, (18), 16 states have call predecessors, (18), 18 states have call successors, (18) [2022-03-20 10:38:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2022-03-20 10:38:34,677 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 56 [2022-03-20 10:38:34,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:38:34,677 INFO L478 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2022-03-20 10:38:34,677 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-03-20 10:38:34,677 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2022-03-20 10:38:34,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-03-20 10:38:34,678 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:38:34,678 INFO L499 BasicCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2022-03-20 10:38:34,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-20 10:38:34,891 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:34,891 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:38:34,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:38:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1689231171, now seen corresponding path program 1 times [2022-03-20 10:38:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:38:34,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924886412] [2022-03-20 10:38:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:34,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:38:34,899 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:38:34,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970142864] [2022-03-20 10:38:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:38:34,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:38:34,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:38:34,904 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) [2022-03-20 10:38:34,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-20 10:38:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:38:34,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-20 10:38:34,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:38:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-03-20 10:38:35,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:39:14,531 WARN L232 SmtUtils]: Spent 28.47s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:40:18,203 WARN L232 SmtUtils]: Spent 21.44s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:41:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 36 proven. 8 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-03-20 10:41:09,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:41:09,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924886412] [2022-03-20 10:41:09,212 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:41:09,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970142864] [2022-03-20 10:41:09,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970142864] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 10:41:09,212 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 10:41:09,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 18 [2022-03-20 10:41:09,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669917249] [2022-03-20 10:41:09,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 10:41:09,213 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-20 10:41:09,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:41:09,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-20 10:41:09,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-03-20 10:41:09,214 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 18 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2022-03-20 10:41:11,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:41:13,312 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:41:15,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:41:28,910 WARN L232 SmtUtils]: Spent 13.33s on a formula simplification. DAG size of input: 57 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:41:32,210 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse4 (<= c_main_~d~0 c_main_~r~0)) (.cse0 (mod c_main_~A~0 4294967296)) (.cse2 (mod c_main_~B~0 4294967296))) (and (let ((.cse1 (* 2 c_main_~p~0)) (.cse3 (* 2 c_main_~d~0))) (or (= .cse0 (+ (* (+ c_main_~q~0 (div .cse1 2)) .cse2) (* (- 1) (div .cse3 2)) c_main_~r~0)) (not (= (* .cse1 .cse2) .cse3)) (not .cse4) (<= .cse3 c_main_~r~0))) (or .cse4 (not (= c_main_~d~0 (* c_main_~p~0 .cse2))) (let ((.cse7 (= (mod c_main_~p~0 2) 0)) (.cse13 (div c_main_~p~0 2))) (let ((.cse9 (* (+ c_main_~q~0 .cse13) .cse2)) (.cse10 (not .cse7)) (.cse5 (* (- 1) (div c_main_~d~0 2))) (.cse6 (* (+ c_main_~q~0 .cse13 1) .cse2)) (.cse12 (= (mod c_main_~d~0 2) 0)) (.cse11 (< c_main_~d~0 0))) (and (or (let ((.cse8 (< c_main_~p~0 0))) (and (or (= .cse0 (+ c_main_~r~0 .cse5 .cse6)) .cse7 (not .cse8)) (or (= .cse0 (+ .cse9 c_main_~r~0 .cse5)) (and .cse10 .cse8)))) (and .cse11 (not .cse12))) (or (and (or (= .cse0 (+ (- 1) .cse9 c_main_~r~0 .cse5)) .cse10) (or .cse7 (= .cse0 (+ (- 1) c_main_~r~0 .cse5 .cse6)))) .cse12 (not .cse11)))))))) is different from true [2022-03-20 10:41:33,930 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:41:36,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:41:36,692 INFO L93 Difference]: Finished difference Result 144 states and 187 transitions. [2022-03-20 10:41:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 10:41:36,692 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) Word has length 75 [2022-03-20 10:41:36,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:41:36,693 INFO L225 Difference]: With dead ends: 144 [2022-03-20 10:41:36,694 INFO L226 Difference]: Without dead ends: 117 [2022-03-20 10:41:36,695 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 131 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 67.1s TimeCoverageRelationStatistics Valid=107, Invalid=402, Unknown=1, NotChecked=42, Total=552 [2022-03-20 10:41:36,695 INFO L913 BasicCegarLoop]: 38 mSDtfsCounter, 58 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 131 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2022-03-20 10:41:36,695 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 275 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 378 Invalid, 3 Unknown, 5 Unchecked, 11.6s Time] [2022-03-20 10:41:36,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-03-20 10:41:36,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2022-03-20 10:41:36,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 60 states have (on average 1.15) internal successors, (69), 65 states have internal predecessors, (69), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-20 10:41:36,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 127 transitions. [2022-03-20 10:41:36,704 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 127 transitions. Word has length 75 [2022-03-20 10:41:36,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:41:36,705 INFO L478 AbstractCegarLoop]: Abstraction has 103 states and 127 transitions. [2022-03-20 10:41:36,705 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0) internal successors, (36), 16 states have internal predecessors, (36), 9 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (20), 8 states have call predecessors, (20), 7 states have call successors, (20) [2022-03-20 10:41:36,705 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 127 transitions. [2022-03-20 10:41:36,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-03-20 10:41:36,706 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:41:36,706 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:41:36,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-20 10:41:36,906 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:36,906 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:41:36,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:41:36,907 INFO L85 PathProgramCache]: Analyzing trace with hash -102783885, now seen corresponding path program 1 times [2022-03-20 10:41:36,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:41:36,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472529569] [2022-03-20 10:41:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:41:36,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:41:36,914 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:41:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228026292] [2022-03-20 10:41:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:41:36,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:36,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:41:36,921 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) [2022-03-20 10:41:36,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-20 10:41:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:41:36,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-20 10:41:36,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:41:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-03-20 10:41:37,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:41:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-03-20 10:41:37,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:41:37,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472529569] [2022-03-20 10:41:37,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:41:37,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228026292] [2022-03-20 10:41:37,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228026292] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 10:41:37,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 10:41:37,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-03-20 10:41:37,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49397684] [2022-03-20 10:41:37,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 10:41:37,385 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-20 10:41:37,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:41:37,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-20 10:41:37,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-03-20 10:41:37,386 INFO L87 Difference]: Start difference. First operand 103 states and 127 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-20 10:41:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:41:37,536 INFO L93 Difference]: Finished difference Result 116 states and 143 transitions. [2022-03-20 10:41:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 10:41:37,537 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 86 [2022-03-20 10:41:37,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:41:37,538 INFO L225 Difference]: With dead ends: 116 [2022-03-20 10:41:37,538 INFO L226 Difference]: Without dead ends: 114 [2022-03-20 10:41:37,539 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-20 10:41:37,540 INFO L913 BasicCegarLoop]: 44 mSDtfsCounter, 16 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 10:41:37,541 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 193 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 10:41:37,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-03-20 10:41:37,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 107. [2022-03-20 10:41:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 67 states have internal predecessors, (72), 32 states have call successors, (32), 13 states have call predecessors, (32), 12 states have return successors, (30), 26 states have call predecessors, (30), 30 states have call successors, (30) [2022-03-20 10:41:37,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 134 transitions. [2022-03-20 10:41:37,550 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 134 transitions. Word has length 86 [2022-03-20 10:41:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:41:37,550 INFO L478 AbstractCegarLoop]: Abstraction has 107 states and 134 transitions. [2022-03-20 10:41:37,550 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 6 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-03-20 10:41:37,550 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 134 transitions. [2022-03-20 10:41:37,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-03-20 10:41:37,551 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:41:37,553 INFO L499 BasicCegarLoop]: trace histogram [11, 10, 10, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:41:37,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-20 10:41:37,772 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:37,772 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:41:37,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:41:37,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1406960063, now seen corresponding path program 2 times [2022-03-20 10:41:37,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:41:37,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728300597] [2022-03-20 10:41:37,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:41:37,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:41:37,779 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:41:37,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [872431528] [2022-03-20 10:41:37,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 10:41:37,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:37,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:41:37,787 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) [2022-03-20 10:41:37,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-20 10:41:37,825 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 10:41:37,825 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 10:41:37,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 10:41:37,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:41:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-03-20 10:41:37,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:41:38,081 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 25 proven. 9 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2022-03-20 10:41:38,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:41:38,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728300597] [2022-03-20 10:41:38,082 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:41:38,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872431528] [2022-03-20 10:41:38,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872431528] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 10:41:38,082 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 10:41:38,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2022-03-20 10:41:38,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843449123] [2022-03-20 10:41:38,082 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 10:41:38,083 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 10:41:38,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:41:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 10:41:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 10:41:38,083 INFO L87 Difference]: Start difference. First operand 107 states and 134 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-03-20 10:41:38,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:41:38,148 INFO L93 Difference]: Finished difference Result 130 states and 164 transitions. [2022-03-20 10:41:38,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 10:41:38,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 88 [2022-03-20 10:41:38,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:41:38,150 INFO L225 Difference]: With dead ends: 130 [2022-03-20 10:41:38,150 INFO L226 Difference]: Without dead ends: 111 [2022-03-20 10:41:38,150 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 10:41:38,150 INFO L913 BasicCegarLoop]: 56 mSDtfsCounter, 1 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 10:41:38,151 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 181 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 10:41:38,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-03-20 10:41:38,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2022-03-20 10:41:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 64 states have (on average 1.15625) internal successors, (74), 69 states have internal predecessors, (74), 34 states have call successors, (34), 13 states have call predecessors, (34), 12 states have return successors, (32), 28 states have call predecessors, (32), 32 states have call successors, (32) [2022-03-20 10:41:38,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 140 transitions. [2022-03-20 10:41:38,160 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 140 transitions. Word has length 88 [2022-03-20 10:41:38,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:41:38,161 INFO L478 AbstractCegarLoop]: Abstraction has 111 states and 140 transitions. [2022-03-20 10:41:38,161 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 5 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-03-20 10:41:38,161 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 140 transitions. [2022-03-20 10:41:38,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-03-20 10:41:38,162 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:41:38,162 INFO L499 BasicCegarLoop]: trace histogram [12, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:41:38,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-20 10:41:38,380 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:38,381 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:41:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:41:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash 966352941, now seen corresponding path program 1 times [2022-03-20 10:41:38,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:41:38,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538917813] [2022-03-20 10:41:38,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:41:38,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:41:38,388 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:41:38,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971088933] [2022-03-20 10:41:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:41:38,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:38,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:41:38,390 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) [2022-03-20 10:41:38,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-20 10:41:38,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:41:38,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-20 10:41:38,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:41:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-03-20 10:41:38,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:41:38,950 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 22 proven. 9 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-03-20 10:41:38,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:41:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538917813] [2022-03-20 10:41:38,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:41:38,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971088933] [2022-03-20 10:41:38,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971088933] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 10:41:38,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 10:41:38,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2022-03-20 10:41:38,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649248654] [2022-03-20 10:41:38,951 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 10:41:38,951 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 10:41:38,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:41:38,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 10:41:38,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-20 10:41:38,952 INFO L87 Difference]: Start difference. First operand 111 states and 140 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 8 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-03-20 10:41:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:41:39,179 INFO L93 Difference]: Finished difference Result 119 states and 148 transitions. [2022-03-20 10:41:39,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-20 10:41:39,180 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 8 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) Word has length 91 [2022-03-20 10:41:39,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:41:39,181 INFO L225 Difference]: With dead ends: 119 [2022-03-20 10:41:39,181 INFO L226 Difference]: Without dead ends: 102 [2022-03-20 10:41:39,181 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-03-20 10:41:39,182 INFO L913 BasicCegarLoop]: 58 mSDtfsCounter, 10 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 10:41:39,182 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 324 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 10:41:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-03-20 10:41:39,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-03-20 10:41:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 59 states have (on average 1.152542372881356) internal successors, (68), 64 states have internal predecessors, (68), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-20 10:41:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 126 transitions. [2022-03-20 10:41:39,189 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 126 transitions. Word has length 91 [2022-03-20 10:41:39,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:41:39,189 INFO L478 AbstractCegarLoop]: Abstraction has 102 states and 126 transitions. [2022-03-20 10:41:39,189 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 10 states have internal predecessors, (33), 8 states have call successors, (29), 2 states have call predecessors, (29), 1 states have return successors, (26), 8 states have call predecessors, (26), 8 states have call successors, (26) [2022-03-20 10:41:39,190 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 126 transitions. [2022-03-20 10:41:39,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-03-20 10:41:39,190 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:41:39,190 INFO L499 BasicCegarLoop]: trace histogram [13, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-20 10:41:39,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-20 10:41:39,391 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,SelfDestructingSolverStorable10 [2022-03-20 10:41:39,391 INFO L403 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:41:39,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:41:39,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1871497790, now seen corresponding path program 1 times [2022-03-20 10:41:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:41:39,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767490254] [2022-03-20 10:41:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:41:39,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:41:39,399 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:41:39,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1166646911] [2022-03-20 10:41:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:41:39,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:39,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:41:39,409 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) [2022-03-20 10:41:39,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-20 10:41:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 10:41:39,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 10:41:39,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:41:39,609 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked. [2022-03-20 10:41:39,609 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-20 10:41:39,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:41:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767490254] [2022-03-20 10:41:39,610 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:41:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166646911] [2022-03-20 10:41:39,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166646911] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 10:41:39,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 10:41:39,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 10:41:39,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878002378] [2022-03-20 10:41:39,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 10:41:39,610 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 10:41:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:41:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 10:41:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-20 10:41:39,611 INFO L87 Difference]: Start difference. First operand 102 states and 126 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-03-20 10:41:39,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:41:39,671 INFO L93 Difference]: Finished difference Result 116 states and 141 transitions. [2022-03-20 10:41:39,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 10:41:39,671 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 95 [2022-03-20 10:41:39,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:41:39,672 INFO L225 Difference]: With dead ends: 116 [2022-03-20 10:41:39,672 INFO L226 Difference]: Without dead ends: 104 [2022-03-20 10:41:39,672 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-03-20 10:41:39,672 INFO L913 BasicCegarLoop]: 57 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 10:41:39,673 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 97 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 10:41:39,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-03-20 10:41:39,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2022-03-20 10:41:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 61 states have (on average 1.1311475409836065) internal successors, (69), 64 states have internal predecessors, (69), 30 states have call successors, (30), 13 states have call predecessors, (30), 12 states have return successors, (28), 26 states have call predecessors, (28), 28 states have call successors, (28) [2022-03-20 10:41:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 127 transitions. [2022-03-20 10:41:39,680 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 127 transitions. Word has length 95 [2022-03-20 10:41:39,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:41:39,680 INFO L478 AbstractCegarLoop]: Abstraction has 104 states and 127 transitions. [2022-03-20 10:41:39,680 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-03-20 10:41:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 127 transitions. [2022-03-20 10:41:39,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-03-20 10:41:39,681 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:41:39,681 INFO L499 BasicCegarLoop]: trace histogram [14, 13, 13, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:41:39,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-20 10:41:39,881 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:39,882 INFO L403 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:41:39,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:41:39,882 INFO L85 PathProgramCache]: Analyzing trace with hash -317970408, now seen corresponding path program 3 times [2022-03-20 10:41:39,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:41:39,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706495105] [2022-03-20 10:41:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:41:39,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:41:39,889 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:41:39,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64493498] [2022-03-20 10:41:39,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-20 10:41:39,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:41:39,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:41:39,890 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) [2022-03-20 10:41:39,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-20 10:41:39,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-03-20 10:41:39,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 10:41:39,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 45 conjunts are in the unsatisfiable core [2022-03-20 10:41:39,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:41:40,581 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 37 proven. 55 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-03-20 10:41:40,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:42:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 31 proven. 55 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2022-03-20 10:42:28,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:42:28,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706495105] [2022-03-20 10:42:28,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:42:28,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64493498] [2022-03-20 10:42:28,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64493498] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 10:42:28,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 10:42:28,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 23 [2022-03-20 10:42:28,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004288751] [2022-03-20 10:42:28,898 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 10:42:28,898 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-20 10:42:28,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:42:28,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-20 10:42:28,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=418, Unknown=3, NotChecked=0, Total=506 [2022-03-20 10:42:28,899 INFO L87 Difference]: Start difference. First operand 104 states and 127 transitions. Second operand has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 20 states have internal predecessors, (49), 11 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 11 states have call predecessors, (31), 9 states have call successors, (31) [2022-03-20 10:43:47,895 WARN L232 SmtUtils]: Spent 1.29m on a formula simplification. DAG size of input: 196 DAG size of output: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:43:49,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:43:51,929 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:46:03,972 WARN L232 SmtUtils]: Spent 2.15m on a formula simplification. DAG size of input: 172 DAG size of output: 164 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:47:04,921 WARN L232 SmtUtils]: Spent 59.25s on a formula simplification. DAG size of input: 195 DAG size of output: 47 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:47:06,467 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:08,169 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:10,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:12,243 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:14,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:16,251 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:18,256 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:21,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:28,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:31,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:34,245 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:41,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:45,976 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-03-20 10:47:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:47:46,913 INFO L93 Difference]: Finished difference Result 252 states and 337 transitions. [2022-03-20 10:47:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-20 10:47:46,914 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 20 states have internal predecessors, (49), 11 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 11 states have call predecessors, (31), 9 states have call successors, (31) Word has length 105 [2022-03-20 10:47:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:47:46,915 INFO L225 Difference]: With dead ends: 252 [2022-03-20 10:47:46,915 INFO L226 Difference]: Without dead ends: 199 [2022-03-20 10:47:46,916 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 184 SyntacticMatches, 5 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 294.6s TimeCoverageRelationStatistics Valid=199, Invalid=917, Unknown=6, NotChecked=0, Total=1122 [2022-03-20 10:47:46,916 INFO L913 BasicCegarLoop]: 50 mSDtfsCounter, 119 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1028 mSolverCounterSat, 251 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 1289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 1028 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.1s IncrementalHoareTripleChecker+Time [2022-03-20 10:47:46,916 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 710 Invalid, 1289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 1028 Invalid, 10 Unknown, 0 Unchecked, 39.1s Time] [2022-03-20 10:47:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2022-03-20 10:47:46,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 183. [2022-03-20 10:47:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 110 states have (on average 1.190909090909091) internal successors, (131), 117 states have internal predecessors, (131), 54 states have call successors, (54), 19 states have call predecessors, (54), 18 states have return successors, (52), 46 states have call predecessors, (52), 52 states have call successors, (52) [2022-03-20 10:47:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 237 transitions. [2022-03-20 10:47:46,933 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 237 transitions. Word has length 105 [2022-03-20 10:47:46,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:47:46,935 INFO L478 AbstractCegarLoop]: Abstraction has 183 states and 237 transitions. [2022-03-20 10:47:46,935 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.130434782608696) internal successors, (49), 20 states have internal predecessors, (49), 11 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (31), 11 states have call predecessors, (31), 9 states have call successors, (31) [2022-03-20 10:47:46,935 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 237 transitions. [2022-03-20 10:47:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-03-20 10:47:46,945 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:47:46,945 INFO L499 BasicCegarLoop]: trace histogram [16, 15, 15, 3, 3, 3, 3, 3, 3, 3, 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] [2022-03-20 10:47:46,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-20 10:47:47,159 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,SelfDestructingSolverStorable12 [2022-03-20 10:47:47,159 INFO L403 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:47:47,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:47:47,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1498631042, now seen corresponding path program 2 times [2022-03-20 10:47:47,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:47:47,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721653285] [2022-03-20 10:47:47,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:47:47,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:47:47,167 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:47:47,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1153801404] [2022-03-20 10:47:47,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-20 10:47:47,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:47:47,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:47:47,183 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) [2022-03-20 10:47:47,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-20 10:47:47,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-20 10:47:47,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 10:47:47,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 49 conjunts are in the unsatisfiable core [2022-03-20 10:47:47,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:47:48,131 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-03-20 10:47:48,835 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 106 proven. 30 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-03-20 10:47:48,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:47:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2022-03-20 10:47:49,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:47:49,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721653285] [2022-03-20 10:47:49,290 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:47:49,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153801404] [2022-03-20 10:47:49,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153801404] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 10:47:49,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 10:47:49,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 20 [2022-03-20 10:47:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466935975] [2022-03-20 10:47:49,291 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 10:47:49,291 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 10:47:49,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:47:49,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 10:47:49,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2022-03-20 10:47:49,292 INFO L87 Difference]: Start difference. First operand 183 states and 237 transitions. Second operand has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 10 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 8 states have call successors, (26) [2022-03-20 10:47:50,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 10:47:50,337 INFO L93 Difference]: Finished difference Result 263 states and 331 transitions. [2022-03-20 10:47:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-20 10:47:50,338 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 10 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 8 states have call successors, (26) Word has length 116 [2022-03-20 10:47:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 10:47:50,339 INFO L225 Difference]: With dead ends: 263 [2022-03-20 10:47:50,339 INFO L226 Difference]: Without dead ends: 182 [2022-03-20 10:47:50,340 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 211 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2022-03-20 10:47:50,340 INFO L913 BasicCegarLoop]: 46 mSDtfsCounter, 36 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-03-20 10:47:50,340 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 260 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-03-20 10:47:50,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-03-20 10:47:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 160. [2022-03-20 10:47:50,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 99 states have (on average 1.1717171717171717) internal successors, (116), 104 states have internal predecessors, (116), 41 states have call successors, (41), 20 states have call predecessors, (41), 19 states have return successors, (39), 35 states have call predecessors, (39), 39 states have call successors, (39) [2022-03-20 10:47:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 196 transitions. [2022-03-20 10:47:50,352 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 196 transitions. Word has length 116 [2022-03-20 10:47:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 10:47:50,353 INFO L478 AbstractCegarLoop]: Abstraction has 160 states and 196 transitions. [2022-03-20 10:47:50,353 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 2.411764705882353) internal successors, (41), 16 states have internal predecessors, (41), 10 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (26), 10 states have call predecessors, (26), 8 states have call successors, (26) [2022-03-20 10:47:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 196 transitions. [2022-03-20 10:47:50,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-03-20 10:47:50,354 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 10:47:50,354 INFO L499 BasicCegarLoop]: trace histogram [19, 18, 18, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 10:47:50,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-20 10:47:50,567 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,SelfDestructingSolverStorable13 [2022-03-20 10:47:50,567 INFO L403 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 10:47:50,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 10:47:50,568 INFO L85 PathProgramCache]: Analyzing trace with hash -715358301, now seen corresponding path program 4 times [2022-03-20 10:47:50,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 10:47:50,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844224838] [2022-03-20 10:47:50,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 10:47:50,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 10:47:50,574 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-20 10:47:50,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [341192605] [2022-03-20 10:47:50,574 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-20 10:47:50,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 10:47:50,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 10:47:50,575 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) [2022-03-20 10:47:50,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-20 10:47:50,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-20 10:47:50,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-20 10:47:50,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 51 conjunts are in the unsatisfiable core [2022-03-20 10:47:50,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 10:47:51,547 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2022-03-20 10:47:51,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 10:48:12,707 WARN L232 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 147 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:48:42,138 WARN L232 SmtUtils]: Spent 7.22s on a formula simplification that was a NOOP. DAG size: 150 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:49:55,448 WARN L232 SmtUtils]: Spent 30.85s on a formula simplification that was a NOOP. DAG size: 451 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:51:48,791 WARN L232 SmtUtils]: Spent 12.62s on a formula simplification. DAG size of input: 123 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-03-20 10:52:29,222 INFO L134 CoverageAnalysis]: Checked inductivity of 711 backedges. 36 proven. 51 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2022-03-20 10:52:29,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 10:52:29,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844224838] [2022-03-20 10:52:29,222 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-20 10:52:29,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341192605] [2022-03-20 10:52:29,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341192605] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 10:52:29,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-20 10:52:29,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 26 [2022-03-20 10:52:29,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443317062] [2022-03-20 10:52:29,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-20 10:52:29,223 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-20 10:52:29,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 10:52:29,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-20 10:52:29,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=518, Unknown=1, NotChecked=0, Total=650 [2022-03-20 10:52:29,224 INFO L87 Difference]: Start difference. First operand 160 states and 196 transitions. Second operand has 26 states, 26 states have (on average 1.9615384615384615) internal successors, (51), 25 states have internal predecessors, (51), 17 states have call successors, (43), 2 states have call predecessors, (43), 1 states have return successors, (40), 15 states have call predecessors, (40), 15 states have call successors, (40) [2022-03-20 10:52:34,446 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse25 (div c_main_~d~0 2))) (let ((.cse111 (+ .cse25 1))) (let ((.cse104 (div .cse111 2)) (.cse24 (div .cse25 2)) (.cse59 (div c_main_~p~0 2))) (let ((.cse112 (+ .cse59 1)) (.cse110 (+ .cse24 1)) (.cse106 (+ .cse104 1))) (let ((.cse22 (= (mod c_main_~p~0 2) 0)) (.cse33 (= (mod .cse104 2) 0)) (.cse9 (= (mod .cse59 2) 0)) (.cse105 (< .cse59 0)) (.cse43 (= (mod .cse111 2) 0)) (.cse40 (= (mod .cse106 2) 0)) (.cse103 (< c_main_~d~0 0)) (.cse45 (= (mod c_main_~d~0 2) 0)) (.cse49 (= (mod .cse24 2) 0)) (.cse108 (div .cse24 2)) (.cse107 (< .cse24 0)) (.cse7 (= 0 (mod .cse25 2))) (.cse53 (= (mod .cse110 2) 0)) (.cse109 (< .cse25 0)) (.cse72 (< c_main_~p~0 0)) (.cse20 (= (mod .cse112 2) 0)) (.cse57 (div .cse112 2)) (.cse100 (div .cse59 2)) (.cse2 (mod c_main_~B~0 4294967296))) (let ((.cse4 (not (<= (+ c_main_~d~0 .cse25) c_main_~r~0))) (.cse0 (not (<= c_main_~d~0 c_main_~r~0))) (.cse14 (* (+ c_main_~q~0 c_main_~p~0 .cse59 .cse100) .cse2)) (.cse11 (* .cse2 (+ c_main_~q~0 c_main_~p~0 .cse59 .cse100 1))) (.cse21 (* (+ c_main_~q~0 .cse57 2 c_main_~p~0 .cse59) .cse2)) (.cse19 (* (+ c_main_~q~0 .cse57 c_main_~p~0 .cse59 1) .cse2)) (.cse3 (* (- 1) c_main_~d~0)) (.cse83 (not (<= .cse111 c_main_~r~0))) (.cse65 (* .cse2 (+ c_main_~q~0 .cse59 .cse100))) (.cse64 (* .cse2 (+ c_main_~q~0 .cse59 .cse100 1))) (.cse18 (not .cse20)) (.cse63 (* (+ c_main_~q~0 .cse57 .cse59 1) .cse2)) (.cse62 (* .cse2 (+ c_main_~q~0 .cse57 2 .cse59))) (.cse68 (* c_main_~q~0 .cse2)) (.cse81 (* (+ c_main_~q~0 .cse59 1) .cse2)) (.cse23 (not .cse72)) (.cse82 (* (+ c_main_~q~0 .cse59) .cse2)) (.cse66 (not (<= .cse25 c_main_~r~0))) (.cse6 (not .cse109)) (.cse55 (not .cse53)) (.cse54 (* (- 1) (div .cse110 2))) (.cse56 (not (<= (+ .cse24 .cse25 1) c_main_~r~0))) (.cse52 (not (<= (+ .cse24 .cse25) c_main_~r~0))) (.cse16 (and .cse109 (not .cse7))) (.cse48 (not .cse107)) (.cse50 (not (<= (+ .cse108 .cse24 .cse25) c_main_~r~0))) (.cse47 (* (- 1) .cse108)) (.cse12 (* (- 1) .cse24)) (.cse51 (and .cse107 (not .cse49))) (.cse5 (and .cse103 (not .cse45))) (.cse42 (not .cse40)) (.cse41 (* (- 1) (div .cse106 2))) (.cse44 (not (<= (+ 2 .cse25 .cse104) c_main_~r~0))) (.cse38 (not .cse43)) (.cse8 (not .cse105)) (.cse13 (and (not .cse9) .cse105)) (.cse26 (not .cse33)) (.cse1 (mod c_main_~A~0 4294967296)) (.cse27 (* (- 1) .cse104)) (.cse29 (* (- 1) (div .cse104 2))) (.cse10 (* (- 1) .cse25)) (.cse39 (not (<= (+ .cse25 .cse104 1) c_main_~r~0))) (.cse46 (not .cse103)) (.cse17 (and (not .cse22) .cse72))) (and (or .cse0 (= .cse1 (+ (* .cse2 (+ c_main_~q~0 c_main_~p~0)) .cse3 c_main_~r~0))) (or .cse4 .cse5 (let ((.cse15 (not (<= (+ .cse24 c_main_~d~0 .cse25) c_main_~r~0)))) (and (or (and (or .cse6 .cse7 (and (or .cse8 .cse9 (= (+ (- 1) .cse3 c_main_~r~0 .cse10 .cse11 .cse12) .cse1)) (or .cse13 (= .cse1 (+ (- 1) .cse3 .cse14 c_main_~r~0 .cse10 .cse12))))) (or .cse15 (and (or .cse8 .cse9 (= (+ .cse3 c_main_~r~0 .cse10 .cse11 .cse12) .cse1)) (or .cse13 (= (+ .cse3 .cse14 c_main_~r~0 .cse10 .cse12) .cse1))) .cse16)) .cse17) (or (and (or .cse6 .cse7 (and (or .cse18 (= .cse1 (+ (- 1) .cse19 .cse3 c_main_~r~0 .cse10 .cse12))) (or .cse20 (= .cse1 (+ (- 1) .cse21 .cse3 c_main_~r~0 .cse10 .cse12))))) (or .cse15 .cse16 (and (or .cse18 (= .cse1 (+ .cse19 .cse3 c_main_~r~0 .cse10 .cse12))) (or (= .cse1 (+ .cse21 .cse3 c_main_~r~0 .cse10 .cse12)) .cse20)))) .cse22 .cse23)))) (or (let ((.cse61 (+ .cse57 1))) (let ((.cse37 (= (mod .cse61 2) 0)) (.cse58 (div .cse61 2)) (.cse30 (= (mod .cse57 2) 0)) (.cse60 (div .cse57 2))) (let ((.cse28 (* (+ c_main_~q~0 .cse57 .cse60 2 .cse59) .cse2)) (.cse32 (* (+ c_main_~q~0 .cse57 .cse60 .cse59 1) .cse2)) (.cse31 (not .cse30)) (.cse35 (* .cse2 (+ c_main_~q~0 .cse57 2 .cse58 .cse59))) (.cse34 (not .cse37)) (.cse36 (* .cse2 (+ c_main_~q~0 .cse57 3 .cse58 .cse59)))) (and (or (and (or (and (or .cse18 (and (or .cse26 (and (or (= (+ .cse27 (- 1) .cse28 c_main_~r~0 .cse29 .cse10) .cse1) .cse30) (or .cse31 (= .cse1 (+ .cse27 (- 1) c_main_~r~0 .cse29 .cse10 .cse32))))) (or (and (or (= .cse1 (+ .cse27 (- 2) c_main_~r~0 .cse29 .cse10 .cse32)) .cse31) (or (= .cse1 (+ .cse27 (- 2) .cse28 c_main_~r~0 .cse29 .cse10)) .cse30)) .cse33))) (or (and (or (and (or .cse34 (= .cse1 (+ .cse27 (- 2) c_main_~r~0 .cse29 .cse10 .cse35))) (or (= .cse1 (+ .cse27 .cse36 (- 2) c_main_~r~0 .cse29 .cse10)) .cse37)) .cse33) (or .cse26 (and (or .cse37 (= .cse1 (+ .cse27 .cse36 (- 1) c_main_~r~0 .cse29 .cse10))) (or .cse34 (= .cse1 (+ .cse27 (- 1) c_main_~r~0 .cse29 .cse10 .cse35)))))) .cse20)) .cse38 .cse39) (or (and (or (and (or .cse40 (and (or (= .cse1 (+ .cse41 .cse27 (- 3) c_main_~r~0 .cse10 .cse35)) .cse34) (or .cse37 (= .cse1 (+ .cse41 .cse27 .cse36 (- 3) c_main_~r~0 .cse10))))) (or (and (or .cse34 (= (+ .cse41 .cse27 (- 2) c_main_~r~0 .cse10 .cse35) .cse1)) (or .cse37 (= .cse1 (+ .cse41 .cse27 .cse36 (- 2) c_main_~r~0 .cse10)))) .cse42)) .cse20) (or .cse18 (and (or (and (or .cse31 (= .cse1 (+ .cse41 .cse27 (- 2) c_main_~r~0 .cse10 .cse32))) (or (= .cse1 (+ .cse41 .cse27 (- 2) .cse28 c_main_~r~0 .cse10)) .cse30)) .cse42) (or .cse40 (and (or (= (+ .cse41 .cse27 (- 3) c_main_~r~0 .cse10 .cse32) .cse1) .cse31) (or (= .cse1 (+ .cse41 .cse27 .cse28 (- 3) c_main_~r~0 .cse10)) .cse30)))))) .cse43 .cse44)) .cse45 .cse46) (or .cse5 (and (or (and (or .cse20 (and (or (and (or .cse37 (= .cse1 (+ .cse36 (- 1) .cse47 c_main_~r~0 .cse10 .cse12))) (or .cse34 (= (+ (- 1) .cse47 c_main_~r~0 .cse10 .cse12 .cse35) .cse1))) .cse48 .cse49) (or .cse50 (and (or .cse37 (= .cse1 (+ .cse36 .cse47 c_main_~r~0 .cse10 .cse12))) (or (= (+ .cse47 c_main_~r~0 .cse10 .cse12 .cse35) .cse1) .cse34)) .cse51))) (or (and (or .cse50 (and (or (= .cse1 (+ .cse47 .cse28 c_main_~r~0 .cse10 .cse12)) .cse30) (or .cse31 (= .cse1 (+ .cse47 c_main_~r~0 .cse10 .cse12 .cse32)))) .cse51) (or .cse48 (and (or (= .cse1 (+ (- 1) .cse47 .cse28 c_main_~r~0 .cse10 .cse12)) .cse30) (or (= .cse1 (+ (- 1) .cse47 c_main_~r~0 .cse10 .cse12 .cse32)) .cse31)) .cse49)) .cse18)) .cse52 .cse16) (or .cse6 .cse7 (and (or .cse18 (and (or .cse53 (and (or .cse31 (= .cse1 (+ (- 2) .cse54 c_main_~r~0 .cse10 .cse12 .cse32))) (or (= .cse1 (+ (- 2) .cse28 .cse54 c_main_~r~0 .cse10 .cse12)) .cse30))) (or (and (or (= (+ (- 1) .cse28 .cse54 c_main_~r~0 .cse10 .cse12) .cse1) .cse30) (or (= .cse1 (+ (- 1) .cse54 c_main_~r~0 .cse10 .cse12 .cse32)) .cse31)) .cse55))) (or (and (or .cse53 (and (or .cse34 (= (+ (- 2) .cse54 c_main_~r~0 .cse10 .cse12 .cse35) .cse1)) (or .cse37 (= .cse1 (+ .cse36 (- 2) .cse54 c_main_~r~0 .cse10 .cse12))))) (or (and (or (= .cse1 (+ (- 1) .cse54 c_main_~r~0 .cse10 .cse12 .cse35)) .cse34) (or .cse37 (= .cse1 (+ .cse36 (- 1) .cse54 c_main_~r~0 .cse10 .cse12)))) .cse55)) .cse20)) .cse56))))))) .cse22 .cse23) (or (and (or .cse22 (and (or .cse52 .cse16 (and (or (= .cse1 (+ .cse62 c_main_~r~0 .cse10 .cse12)) .cse20) (or .cse18 (= .cse1 (+ c_main_~r~0 .cse10 .cse12 .cse63))))) (or .cse6 .cse7 (and (or .cse18 (= .cse1 (+ (- 1) c_main_~r~0 .cse10 .cse12 .cse63))) (or (= .cse1 (+ (- 1) .cse62 c_main_~r~0 .cse10 .cse12)) .cse20)))) .cse23) (or (and (or .cse52 (and (or .cse8 .cse9 (= (+ .cse64 c_main_~r~0 .cse10 .cse12) .cse1)) (or .cse13 (= (+ .cse65 c_main_~r~0 .cse10 .cse12) .cse1))) .cse16) (or .cse6 .cse7 (and (or .cse8 .cse9 (= .cse1 (+ (- 1) .cse64 c_main_~r~0 .cse10 .cse12))) (or (= .cse1 (+ (- 1) .cse65 c_main_~r~0 .cse10 .cse12)) .cse13)))) .cse17)) .cse5 .cse66) (let ((.cse76 (* c_main_~d~0 4))) (or (not (<= (+ .cse25 (* 3 c_main_~d~0)) c_main_~r~0)) (let ((.cse77 (div (* c_main_~p~0 4) 2))) (let ((.cse78 (div .cse77 2))) (let ((.cse73 (= (mod .cse78 2) 0)) (.cse67 (* (div .cse78 2) .cse2)) (.cse69 (* .cse78 .cse2)) (.cse70 (* .cse2 .cse77)) (.cse71 (let ((.cse75 (div .cse76 2))) (let ((.cse74 (div .cse75 2))) (+ .cse1 .cse74 (div .cse74 2) .cse75))))) (and (or (= (+ .cse67 c_main_~r~0 .cse68 .cse69 .cse70) .cse71) (and .cse72 (not .cse73))) (or .cse73 .cse23 (= (+ .cse67 .cse2 c_main_~r~0 .cse68 .cse69 .cse70) .cse71)))))) (<= .cse76 c_main_~r~0))) (or (let ((.cse80 (* .cse2 (+ c_main_~q~0 c_main_~p~0 .cse59))) (.cse79 (* (+ c_main_~q~0 c_main_~p~0 .cse59 1) .cse2))) (and (or .cse4 .cse5 (and (or (= .cse1 (+ .cse3 c_main_~r~0 .cse10 .cse79)) .cse22 .cse23) (or (= .cse1 (+ .cse80 .cse3 c_main_~r~0 .cse10)) .cse17))) (or (and (or (= .cse1 (+ (- 1) .cse80 .cse3 c_main_~r~0 .cse10)) .cse17) (or (= .cse1 (+ (- 1) .cse3 c_main_~r~0 .cse10 .cse79)) .cse22 .cse23)) .cse45 .cse46))) .cse0) (or (not (<= (+ c_main_~d~0 .cse25 1) c_main_~r~0)) (and (or (and (or (and (or .cse8 .cse9 (= (+ .cse27 (- 1) .cse3 c_main_~r~0 .cse10 .cse11) .cse1)) (or .cse13 (= .cse1 (+ .cse27 (- 1) .cse3 .cse14 c_main_~r~0 .cse10)))) .cse38) (or .cse43 (and (or .cse13 (= .cse1 (+ .cse27 (- 2) .cse3 .cse14 c_main_~r~0 .cse10))) (or .cse8 .cse9 (= .cse1 (+ .cse27 (- 2) .cse3 c_main_~r~0 .cse10 .cse11)))))) .cse17) (or .cse22 .cse23 (and (or .cse43 (and (or .cse18 (= .cse1 (+ .cse27 (- 2) .cse19 .cse3 c_main_~r~0 .cse10))) (or (= .cse1 (+ .cse27 (- 2) .cse21 .cse3 c_main_~r~0 .cse10)) .cse20))) (or .cse38 (and (or .cse20 (= .cse1 (+ .cse27 (- 1) .cse21 .cse3 c_main_~r~0 .cse10))) (or .cse18 (= .cse1 (+ .cse27 (- 1) .cse19 .cse3 c_main_~r~0 .cse10)))))))) .cse45 .cse46) (or (and (or .cse22 (= .cse1 (+ (- 1) c_main_~r~0 .cse10 .cse81)) .cse23) (or (= .cse1 (+ (- 1) .cse82 c_main_~r~0 .cse10)) .cse17)) .cse83 .cse45 .cse46) (= (+ c_main_~r~0 .cse68) .cse1) (or .cse83 (and (or (and (or .cse43 (and (or .cse8 .cse9 (= (+ .cse27 (- 2) .cse64 c_main_~r~0 .cse10) .cse1)) (or .cse13 (= (+ .cse27 (- 2) .cse65 c_main_~r~0 .cse10) .cse1)))) (or (and (or .cse13 (= .cse1 (+ .cse27 (- 1) .cse65 c_main_~r~0 .cse10))) (or .cse8 .cse9 (= (+ .cse27 (- 1) .cse64 c_main_~r~0 .cse10) .cse1))) .cse38)) .cse17) (or (and (or (and (or .cse18 (= (+ .cse27 (- 1) c_main_~r~0 .cse10 .cse63) .cse1)) (or (= .cse1 (+ .cse27 (- 1) .cse62 c_main_~r~0 .cse10)) .cse20)) .cse38) (or .cse43 (and (or .cse18 (= .cse1 (+ .cse27 (- 2) c_main_~r~0 .cse10 .cse63))) (or (= (+ .cse27 (- 2) .cse62 c_main_~r~0 .cse10) .cse1) .cse20)))) .cse22 .cse23)) .cse45 .cse46) (let ((.cse86 (* c_main_~d~0 8))) (or (not (<= (* 7 c_main_~d~0) c_main_~r~0)) (= (let ((.cse85 (div .cse86 2))) (let ((.cse84 (div .cse85 2))) (+ .cse84 .cse1 (div .cse84 2) .cse85))) (let ((.cse88 (div (* c_main_~p~0 8) 2))) (let ((.cse87 (div .cse88 2))) (+ (* .cse87 .cse2) (* .cse2 .cse88) (* (div .cse87 2) .cse2) c_main_~r~0 .cse68)))) (<= .cse86 c_main_~r~0))) (or (and (or (= .cse1 (+ c_main_~r~0 .cse10 .cse81)) .cse22 .cse23) (or (= .cse1 (+ .cse82 c_main_~r~0 .cse10)) .cse17)) .cse5 .cse66) (or (let ((.cse102 (+ .cse100 1))) (let ((.cse99 (div .cse100 2)) (.cse98 (< .cse100 0)) (.cse93 (= (mod .cse100 2) 0)) (.cse94 (= (mod .cse102 2) 0)) (.cse101 (div .cse102 2))) (let ((.cse95 (* .cse2 (+ c_main_~q~0 2 .cse101 .cse59 .cse100))) (.cse96 (* (+ c_main_~q~0 .cse101 .cse59 .cse100 1) .cse2)) (.cse97 (not .cse94)) (.cse89 (and .cse98 (not .cse93))) (.cse90 (* (+ c_main_~q~0 .cse99 .cse59 .cse100) .cse2)) (.cse91 (* .cse2 (+ c_main_~q~0 .cse99 .cse59 .cse100 1))) (.cse92 (not .cse98))) (and (or (and (or .cse6 .cse7 (and (or .cse13 (and (or .cse53 (and (or .cse89 (= .cse1 (+ (- 2) .cse90 .cse54 c_main_~r~0 .cse10 .cse12))) (or (= .cse1 (+ (- 2) .cse54 c_main_~r~0 .cse10 .cse12 .cse91)) .cse92 .cse93))) (or (and (or .cse89 (= (+ (- 1) .cse90 .cse54 c_main_~r~0 .cse10 .cse12) .cse1)) (or .cse92 .cse93 (= .cse1 (+ (- 1) .cse54 c_main_~r~0 .cse10 .cse12 .cse91)))) .cse55))) (or .cse8 .cse9 (and (or .cse53 (and (or .cse94 (= (+ (- 2) .cse54 c_main_~r~0 .cse10 .cse95 .cse12) .cse1)) (or (= (+ .cse96 (- 2) .cse54 c_main_~r~0 .cse10 .cse12) .cse1) .cse97))) (or .cse55 (and (or .cse94 (= .cse1 (+ (- 1) .cse54 c_main_~r~0 .cse10 .cse95 .cse12))) (or (= .cse1 (+ (- 1) .cse96 .cse54 c_main_~r~0 .cse10 .cse12)) .cse97)))))) .cse56) (or .cse52 .cse16 (and (or .cse13 (and (or (and (or (= (+ (- 1) .cse47 c_main_~r~0 .cse10 .cse12 .cse91) .cse1) .cse92 .cse93) (or .cse89 (= .cse1 (+ (- 1) .cse47 .cse90 c_main_~r~0 .cse10 .cse12)))) .cse48 .cse49) (or .cse50 .cse51 (and (or .cse89 (= (+ .cse47 .cse90 c_main_~r~0 .cse10 .cse12) .cse1)) (or .cse92 .cse93 (= (+ .cse47 c_main_~r~0 .cse10 .cse12 .cse91) .cse1)))))) (or .cse8 .cse9 (and (or .cse48 (and (or (= .cse1 (+ (- 1) .cse96 .cse47 c_main_~r~0 .cse10 .cse12)) .cse97) (or .cse94 (= .cse1 (+ (- 1) .cse47 c_main_~r~0 .cse10 .cse95 .cse12)))) .cse49) (or .cse50 (and (or .cse94 (= .cse1 (+ .cse47 c_main_~r~0 .cse10 .cse95 .cse12))) (or (= (+ .cse96 .cse47 c_main_~r~0 .cse10 .cse12) .cse1) .cse97)) .cse51)))))) .cse5) (or (and (or (and (or .cse8 (and (or .cse40 (and (or (= .cse1 (+ .cse41 .cse27 .cse96 (- 3) c_main_~r~0 .cse10)) .cse97) (or .cse94 (= .cse1 (+ .cse41 .cse27 (- 3) c_main_~r~0 .cse10 .cse95))))) (or .cse42 (and (or .cse94 (= .cse1 (+ .cse41 .cse27 (- 2) c_main_~r~0 .cse10 .cse95))) (or (= (+ .cse41 .cse27 .cse96 (- 2) c_main_~r~0 .cse10) .cse1) .cse97)))) .cse9) (or (and (or (and (or .cse89 (= .cse1 (+ .cse41 .cse27 (- 2) .cse90 c_main_~r~0 .cse10))) (or .cse92 .cse93 (= .cse1 (+ .cse41 .cse27 (- 2) c_main_~r~0 .cse10 .cse91)))) .cse42) (or .cse40 (and (or (= .cse1 (+ .cse41 .cse27 (- 3) c_main_~r~0 .cse10 .cse91)) .cse92 .cse93) (or .cse89 (= .cse1 (+ .cse41 .cse27 .cse90 (- 3) c_main_~r~0 .cse10)))))) .cse13)) .cse43 .cse44) (or .cse38 (and (or .cse8 .cse9 (and (or .cse26 (and (or .cse97 (= .cse1 (+ .cse27 (- 1) .cse96 c_main_~r~0 .cse29 .cse10))) (or .cse94 (= .cse1 (+ .cse27 (- 1) c_main_~r~0 .cse29 .cse10 .cse95))))) (or (and (or .cse94 (= (+ .cse27 (- 2) c_main_~r~0 .cse29 .cse10 .cse95) .cse1)) (or (= .cse1 (+ .cse27 .cse96 (- 2) c_main_~r~0 .cse29 .cse10)) .cse97)) .cse33))) (or .cse13 (and (or (and (or .cse92 .cse93 (= .cse1 (+ .cse27 (- 2) c_main_~r~0 .cse29 .cse10 .cse91))) (or .cse89 (= .cse1 (+ .cse27 (- 2) .cse90 c_main_~r~0 .cse29 .cse10)))) .cse33) (or .cse26 (and (or .cse89 (= .cse1 (+ .cse27 (- 1) .cse90 c_main_~r~0 .cse29 .cse10))) (or (= .cse1 (+ .cse27 (- 1) c_main_~r~0 .cse29 .cse10 .cse91)) .cse92 .cse93)))))) .cse39)) .cse45 .cse46))))) .cse17)))))))) is different from false [2022-03-20 10:52:52,624 WARN L232 SmtUtils]: Spent 15.78s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)