/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 14:56:12,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 14:56:12,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 14:56:12,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 14:56:12,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 14:56:12,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 14:56:12,155 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 14:56:12,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 14:56:12,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 14:56:12,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 14:56:12,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 14:56:12,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 14:56:12,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 14:56:12,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 14:56:12,179 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 14:56:12,180 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 14:56:12,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 14:56:12,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 14:56:12,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 14:56:12,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 14:56:12,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-05-02 14:56:12,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 14:56:12,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 14:56:12,222 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 14:56:12,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 14:56:12,222 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 14:56:12,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 14:56:12,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 14:56:12,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 14:56:12,222 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 14:56:12,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 14:56:12,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 14:56:12,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 14:56:12,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 14:56:12,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 14:56:12,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 14:56:12,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 14:56:12,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 14:56:12,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 14:56:12,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 14:56:12,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 14:56:12,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 14:56:12,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 14:56:12,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 14:56:12,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 14:56:12,490 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 14:56:12,491 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 14:56:12,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound5.c [2021-05-02 14:56:12,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/047d4e112/2d596b5c7b5846f39f5cffa2ff6c4bbf/FLAG28d2311ad [2021-05-02 14:56:12,919 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 14:56:12,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound5.c [2021-05-02 14:56:12,930 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/047d4e112/2d596b5c7b5846f39f5cffa2ff6c4bbf/FLAG28d2311ad [2021-05-02 14:56:13,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/047d4e112/2d596b5c7b5846f39f5cffa2ff6c4bbf [2021-05-02 14:56:13,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 14:56:13,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 14:56:13,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 14:56:13,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 14:56:13,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 14:56:13,331 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ad4764b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13, skipping insertion in model container [2021-05-02 14:56:13,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,337 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 14:56:13,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 14:56:13,468 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound5.c[490,503] [2021-05-02 14:56:13,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:56:13,486 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 14:56:13,551 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/egcd2-ll_valuebound5.c[490,503] [2021-05-02 14:56:13,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 14:56:13,582 INFO L208 MainTranslator]: Completed translation [2021-05-02 14:56:13,582 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13 WrapperNode [2021-05-02 14:56:13,582 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 14:56:13,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 14:56:13,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 14:56:13,585 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 14:56:13,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (1/1) ... [2021-05-02 14:56:13,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 14:56:13,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 14:56:13,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 14:56:13,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 14:56:13,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 14:56:13,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 14:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 14:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 14:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 14:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 14:56:13,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 14:56:13,674 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 14:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 14:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 14:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 14:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 14:56:13,675 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 14:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 14:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 14:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 14:56:13,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 14:56:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 14:56:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 14:56:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 14:56:13,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 14:56:13,956 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 14:56:13,957 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 14:56:13,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:56:13 BoogieIcfgContainer [2021-05-02 14:56:13,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 14:56:13,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 14:56:13,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 14:56:13,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 14:56:13,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 02:56:13" (1/3) ... [2021-05-02 14:56:13,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767d1956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:56:13, skipping insertion in model container [2021-05-02 14:56:13,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 02:56:13" (2/3) ... [2021-05-02 14:56:13,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@767d1956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 02:56:13, skipping insertion in model container [2021-05-02 14:56:13,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 02:56:13" (3/3) ... [2021-05-02 14:56:13,968 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound5.c [2021-05-02 14:56:13,974 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 14:56:13,976 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 14:56:13,987 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 14:56:14,015 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 14:56:14,015 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 14:56:14,015 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 14:56:14,015 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 14:56:14,016 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 14:56:14,016 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 14:56:14,016 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 14:56:14,016 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 14:56:14,028 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-02 14:56:14,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-05-02 14:56:14,032 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:14,033 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:14,033 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:14,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:14,037 INFO L82 PathProgramCache]: Analyzing trace with hash -587582002, now seen corresponding path program 1 times [2021-05-02 14:56:14,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:14,053 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932216524] [2021-05-02 14:56:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:14,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 14:56:14,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-02 14:56:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-05-02 14:56:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-05-02 14:56:14,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-05-02 14:56:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-05-02 14:56:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-05-02 14:56:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-02 14:56:14,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:14,315 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932216524] [2021-05-02 14:56:14,315 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932216524] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:56:14,315 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:56:14,316 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 14:56:14,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97731649] [2021-05-02 14:56:14,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 14:56:14,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:14,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 14:56:14,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:56:14,329 INFO L87 Difference]: Start difference. First operand has 40 states, 20 states have (on average 1.45) internal successors, (29), 22 states have internal predecessors, (29), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 14:56:14,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:14,426 INFO L93 Difference]: Finished difference Result 73 states and 118 transitions. [2021-05-02 14:56:14,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 14:56:14,428 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 43 [2021-05-02 14:56:14,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:14,433 INFO L225 Difference]: With dead ends: 73 [2021-05-02 14:56:14,433 INFO L226 Difference]: Without dead ends: 35 [2021-05-02 14:56:14,435 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 47.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 14:56:14,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-02 14:56:14,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-05-02 14:56:14,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 19 states have internal predecessors, (20), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 14:56:14,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2021-05-02 14:56:14,463 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 43 [2021-05-02 14:56:14,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:14,463 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2021-05-02 14:56:14,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 14:56:14,463 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2021-05-02 14:56:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-02 14:56:14,465 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:14,465 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:14,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 14:56:14,465 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:14,466 INFO L82 PathProgramCache]: Analyzing trace with hash 987777007, now seen corresponding path program 1 times [2021-05-02 14:56:14,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:14,466 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948455806] [2021-05-02 14:56:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:14,481 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:14,481 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [544341877] [2021-05-02 14:56:14,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:14,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 14:56:14,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:14,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:14,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:14,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:14,719 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:14,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:14,738 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-05-02 14:56:14,739 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:14,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948455806] [2021-05-02 14:56:14,739 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:14,739 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [544341877] [2021-05-02 14:56:14,739 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [544341877] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:14,739 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:14,739 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-02 14:56:14,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447142280] [2021-05-02 14:56:14,740 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 14:56:14,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:14,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 14:56:14,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 14:56:14,741 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 14:56:14,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:14,836 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-05-02 14:56:14,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 14:56:14,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 44 [2021-05-02 14:56:14,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:14,838 INFO L225 Difference]: With dead ends: 52 [2021-05-02 14:56:14,838 INFO L226 Difference]: Without dead ends: 44 [2021-05-02 14:56:14,839 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 26.7ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-05-02 14:56:14,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-05-02 14:56:14,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2021-05-02 14:56:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 14 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-02 14:56:14,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-05-02 14:56:14,848 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 44 [2021-05-02 14:56:14,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:14,849 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-05-02 14:56:14,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 14:56:14,849 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-05-02 14:56:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-05-02 14:56:14,850 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:14,850 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:15,067 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 14:56:15,068 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:15,068 INFO L82 PathProgramCache]: Analyzing trace with hash 561616070, now seen corresponding path program 1 times [2021-05-02 14:56:15,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:15,069 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660194490] [2021-05-02 14:56:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:15,088 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:15,089 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1954471241] [2021-05-02 14:56:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:15,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 21 conjunts are in the unsatisfiable core [2021-05-02 14:56:15,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:15,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,381 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 14:56:15,381 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:15,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660194490] [2021-05-02 14:56:15,381 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:15,382 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954471241] [2021-05-02 14:56:15,382 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954471241] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:15,382 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:15,382 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 14:56:15,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319983642] [2021-05-02 14:56:15,382 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 14:56:15,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:15,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 14:56:15,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-05-02 14:56:15,383 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 14:56:15,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:15,519 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2021-05-02 14:56:15,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 14:56:15,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2021-05-02 14:56:15,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:15,521 INFO L225 Difference]: With dead ends: 57 [2021-05-02 14:56:15,521 INFO L226 Difference]: Without dead ends: 55 [2021-05-02 14:56:15,522 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 62.0ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 14:56:15,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-02 14:56:15,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2021-05-02 14:56:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 25 states have internal predecessors, (26), 15 states have call successors, (15), 5 states have call predecessors, (15), 4 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-02 14:56:15,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 54 transitions. [2021-05-02 14:56:15,530 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 54 transitions. Word has length 45 [2021-05-02 14:56:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:15,530 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 54 transitions. [2021-05-02 14:56:15,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-05-02 14:56:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 54 transitions. [2021-05-02 14:56:15,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-02 14:56:15,531 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:15,532 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:15,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:15,748 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:15,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:15,748 INFO L82 PathProgramCache]: Analyzing trace with hash -680064098, now seen corresponding path program 1 times [2021-05-02 14:56:15,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:15,749 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059614770] [2021-05-02 14:56:15,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:15,769 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:15,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241184672] [2021-05-02 14:56:15,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:15,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 14:56:15,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:15,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,924 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,937 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,939 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:15,988 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 5 proven. 21 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-05-02 14:56:15,988 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:15,988 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059614770] [2021-05-02 14:56:15,989 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:15,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241184672] [2021-05-02 14:56:15,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241184672] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:15,989 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:15,989 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 14:56:15,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780139121] [2021-05-02 14:56:15,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 14:56:15,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:15,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 14:56:15,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 14:56:15,990 INFO L87 Difference]: Start difference. First operand 43 states and 54 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 14:56:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:16,094 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2021-05-02 14:56:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 14:56:16,095 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 50 [2021-05-02 14:56:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:16,097 INFO L225 Difference]: With dead ends: 56 [2021-05-02 14:56:16,097 INFO L226 Difference]: Without dead ends: 54 [2021-05-02 14:56:16,097 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 54.3ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 14:56:16,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-05-02 14:56:16,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2021-05-02 14:56:16,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 30 states have internal predecessors, (32), 19 states have call successors, (19), 6 states have call predecessors, (19), 5 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 14:56:16,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2021-05-02 14:56:16,106 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 50 [2021-05-02 14:56:16,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:16,106 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2021-05-02 14:56:16,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-05-02 14:56:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2021-05-02 14:56:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-02 14:56:16,107 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:16,107 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:16,323 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:16,326 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:16,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:16,327 INFO L82 PathProgramCache]: Analyzing trace with hash 606548870, now seen corresponding path program 1 times [2021-05-02 14:56:16,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:16,327 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137475964] [2021-05-02 14:56:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:16,336 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:16,336 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12094829] [2021-05-02 14:56:16,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:16,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 22 conjunts are in the unsatisfiable core [2021-05-02 14:56:16,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:16,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,467 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,469 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,515 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,535 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,536 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:16,552 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 7 proven. 21 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-02 14:56:16,552 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:16,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137475964] [2021-05-02 14:56:16,552 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:16,552 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12094829] [2021-05-02 14:56:16,552 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12094829] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:16,552 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:16,552 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-05-02 14:56:16,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286168135] [2021-05-02 14:56:16,553 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 14:56:16,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:16,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 14:56:16,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-05-02 14:56:16,553 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-05-02 14:56:16,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:16,666 INFO L93 Difference]: Finished difference Result 60 states and 74 transitions. [2021-05-02 14:56:16,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 14:56:16,666 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 55 [2021-05-02 14:56:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:16,667 INFO L225 Difference]: With dead ends: 60 [2021-05-02 14:56:16,667 INFO L226 Difference]: Without dead ends: 58 [2021-05-02 14:56:16,668 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-05-02 14:56:16,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-05-02 14:56:16,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-05-02 14:56:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 33 states have internal predecessors, (35), 19 states have call successors, (19), 7 states have call predecessors, (19), 6 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 14:56:16,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 71 transitions. [2021-05-02 14:56:16,675 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 71 transitions. Word has length 55 [2021-05-02 14:56:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:16,676 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 71 transitions. [2021-05-02 14:56:16,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 4 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2021-05-02 14:56:16,676 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 71 transitions. [2021-05-02 14:56:16,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-05-02 14:56:16,677 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:16,677 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:16,895 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:16,895 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:16,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:16,896 INFO L82 PathProgramCache]: Analyzing trace with hash 1584976990, now seen corresponding path program 1 times [2021-05-02 14:56:16,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:16,896 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117101946] [2021-05-02 14:56:16,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:16,905 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:16,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [211357124] [2021-05-02 14:56:16,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:16,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 14:56:16,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:17,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,106 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:17,151 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-05-02 14:56:17,151 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:17,151 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117101946] [2021-05-02 14:56:17,152 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:17,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211357124] [2021-05-02 14:56:17,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [211357124] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:17,152 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:17,152 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 14:56:17,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850880146] [2021-05-02 14:56:17,152 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 14:56:17,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:17,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 14:56:17,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:56:17,153 INFO L87 Difference]: Start difference. First operand 57 states and 71 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-02 14:56:19,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:19,365 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2021-05-02 14:56:19,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 14:56:19,366 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2021-05-02 14:56:19,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:19,366 INFO L225 Difference]: With dead ends: 64 [2021-05-02 14:56:19,367 INFO L226 Difference]: Without dead ends: 62 [2021-05-02 14:56:19,367 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 65.4ms TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-05-02 14:56:19,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-05-02 14:56:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2021-05-02 14:56:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 36 states have internal predecessors, (38), 19 states have call successors, (19), 8 states have call predecessors, (19), 7 states have return successors, (17), 16 states have call predecessors, (17), 17 states have call successors, (17) [2021-05-02 14:56:19,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2021-05-02 14:56:19,374 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 60 [2021-05-02 14:56:19,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:19,375 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2021-05-02 14:56:19,375 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 9 states have internal predecessors, (23), 3 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-05-02 14:56:19,375 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2021-05-02 14:56:19,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-05-02 14:56:19,376 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:19,376 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:19,592 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-05-02 14:56:19,592 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:19,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:19,592 INFO L82 PathProgramCache]: Analyzing trace with hash -669670075, now seen corresponding path program 1 times [2021-05-02 14:56:19,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:19,593 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752130265] [2021-05-02 14:56:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:19,600 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:19,601 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828799786] [2021-05-02 14:56:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:19,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2021-05-02 14:56:19,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:19,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:19,805 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-05-02 14:56:19,805 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:19,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752130265] [2021-05-02 14:56:19,805 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:19,805 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828799786] [2021-05-02 14:56:19,805 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1828799786] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:19,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:19,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 14:56:19,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862934184] [2021-05-02 14:56:19,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 14:56:19,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:19,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 14:56:19,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 14:56:19,807 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-05-02 14:56:19,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:19,917 INFO L93 Difference]: Finished difference Result 91 states and 122 transitions. [2021-05-02 14:56:19,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-02 14:56:19,917 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 67 [2021-05-02 14:56:19,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:19,918 INFO L225 Difference]: With dead ends: 91 [2021-05-02 14:56:19,918 INFO L226 Difference]: Without dead ends: 89 [2021-05-02 14:56:19,918 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 35.8ms TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:56:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-05-02 14:56:19,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2021-05-02 14:56:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 42 states have (on average 1.1428571428571428) internal successors, (48), 45 states have internal predecessors, (48), 28 states have call successors, (28), 9 states have call predecessors, (28), 8 states have return successors, (26), 24 states have call predecessors, (26), 26 states have call successors, (26) [2021-05-02 14:56:19,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 102 transitions. [2021-05-02 14:56:19,929 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 102 transitions. Word has length 67 [2021-05-02 14:56:19,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:19,929 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 102 transitions. [2021-05-02 14:56:19,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 3 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-05-02 14:56:19,929 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 102 transitions. [2021-05-02 14:56:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-05-02 14:56:19,930 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:19,930 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:20,149 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:20,150 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:20,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:20,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1682830289, now seen corresponding path program 1 times [2021-05-02 14:56:20,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:20,150 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764960858] [2021-05-02 14:56:20,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:20,160 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:20,160 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478892457] [2021-05-02 14:56:20,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:20,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 14:56:20,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:20,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,308 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,346 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,368 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 14 proven. 11 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-05-02 14:56:20,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:20,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764960858] [2021-05-02 14:56:20,381 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:20,381 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478892457] [2021-05-02 14:56:20,381 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478892457] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:20,381 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:20,381 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-05-02 14:56:20,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092930621] [2021-05-02 14:56:20,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-02 14:56:20,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:20,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-02 14:56:20,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-05-02 14:56:20,382 INFO L87 Difference]: Start difference. First operand 79 states and 102 transitions. Second operand has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-05-02 14:56:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:20,528 INFO L93 Difference]: Finished difference Result 124 states and 172 transitions. [2021-05-02 14:56:20,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-02 14:56:20,529 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2021-05-02 14:56:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:20,530 INFO L225 Difference]: With dead ends: 124 [2021-05-02 14:56:20,530 INFO L226 Difference]: Without dead ends: 116 [2021-05-02 14:56:20,531 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 51.4ms TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-05-02 14:56:20,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-05-02 14:56:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 105. [2021-05-02 14:56:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 55 states have (on average 1.1818181818181819) internal successors, (65), 59 states have internal predecessors, (65), 41 states have call successors, (41), 9 states have call predecessors, (41), 8 states have return successors, (39), 36 states have call predecessors, (39), 39 states have call successors, (39) [2021-05-02 14:56:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 145 transitions. [2021-05-02 14:56:20,544 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 145 transitions. Word has length 69 [2021-05-02 14:56:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:20,545 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 145 transitions. [2021-05-02 14:56:20,545 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 3.0) internal successors, (24), 7 states have internal predecessors, (24), 5 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2021-05-02 14:56:20,545 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 145 transitions. [2021-05-02 14:56:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-05-02 14:56:20,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:20,546 INFO L523 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:20,766 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:20,768 INFO L428 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:20,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:20,769 INFO L82 PathProgramCache]: Analyzing trace with hash 376741854, now seen corresponding path program 1 times [2021-05-02 14:56:20,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:20,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514954348] [2021-05-02 14:56:20,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:20,776 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:20,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949462102] [2021-05-02 14:56:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:20,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:20,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 26 conjunts are in the unsatisfiable core [2021-05-02 14:56:20,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:20,851 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,907 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,921 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,983 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,993 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:20,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,014 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 15 proven. 27 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-05-02 14:56:21,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:21,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514954348] [2021-05-02 14:56:21,015 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:21,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949462102] [2021-05-02 14:56:21,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1949462102] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:21,015 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:21,015 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-05-02 14:56:21,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486676122] [2021-05-02 14:56:21,015 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-02 14:56:21,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:21,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-02 14:56:21,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-05-02 14:56:21,016 INFO L87 Difference]: Start difference. First operand 105 states and 145 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-05-02 14:56:21,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:21,220 INFO L93 Difference]: Finished difference Result 150 states and 213 transitions. [2021-05-02 14:56:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 14:56:21,220 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) Word has length 75 [2021-05-02 14:56:21,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:21,221 INFO L225 Difference]: With dead ends: 150 [2021-05-02 14:56:21,221 INFO L226 Difference]: Without dead ends: 147 [2021-05-02 14:56:21,222 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 79.8ms TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2021-05-02 14:56:21,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-05-02 14:56:21,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 144. [2021-05-02 14:56:21,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 81 states have internal predecessors, (89), 60 states have call successors, (60), 10 states have call predecessors, (60), 9 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-02 14:56:21,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 206 transitions. [2021-05-02 14:56:21,238 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 206 transitions. Word has length 75 [2021-05-02 14:56:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:21,238 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 206 transitions. [2021-05-02 14:56:21,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 5 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 5 states have call successors, (12) [2021-05-02 14:56:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 206 transitions. [2021-05-02 14:56:21,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-05-02 14:56:21,239 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:21,239 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:21,455 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-05-02 14:56:21,455 INFO L428 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:21,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1245952186, now seen corresponding path program 2 times [2021-05-02 14:56:21,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:21,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515097800] [2021-05-02 14:56:21,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:21,462 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:21,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1472444254] [2021-05-02 14:56:21,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:21,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 14:56:21,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:21,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 39 conjunts are in the unsatisfiable core [2021-05-02 14:56:21,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:21,596 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,612 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 12 proven. 21 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-05-02 14:56:21,757 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:21,757 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515097800] [2021-05-02 14:56:21,758 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:21,758 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472444254] [2021-05-02 14:56:21,758 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472444254] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:21,758 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:21,758 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2021-05-02 14:56:21,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402737101] [2021-05-02 14:56:21,758 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-05-02 14:56:21,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:21,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-05-02 14:56:21,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-05-02 14:56:21,759 INFO L87 Difference]: Start difference. First operand 144 states and 206 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-05-02 14:56:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:21,977 INFO L93 Difference]: Finished difference Result 152 states and 213 transitions. [2021-05-02 14:56:21,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-02 14:56:21,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2021-05-02 14:56:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:21,979 INFO L225 Difference]: With dead ends: 152 [2021-05-02 14:56:21,979 INFO L226 Difference]: Without dead ends: 150 [2021-05-02 14:56:21,980 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 77.9ms TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-05-02 14:56:21,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2021-05-02 14:56:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148. [2021-05-02 14:56:21,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 84 states have internal predecessors, (92), 60 states have call successors, (60), 11 states have call predecessors, (60), 10 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-02 14:56:22,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 209 transitions. [2021-05-02 14:56:22,001 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 209 transitions. Word has length 80 [2021-05-02 14:56:22,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:22,001 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 209 transitions. [2021-05-02 14:56:22,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 states have internal predecessors, (25), 5 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2021-05-02 14:56:22,001 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 209 transitions. [2021-05-02 14:56:22,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-05-02 14:56:22,002 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:22,003 INFO L523 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:22,228 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:22,228 INFO L428 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:22,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:22,229 INFO L82 PathProgramCache]: Analyzing trace with hash 901388446, now seen corresponding path program 3 times [2021-05-02 14:56:22,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:22,229 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61053785] [2021-05-02 14:56:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:22,235 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:22,236 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887283575] [2021-05-02 14:56:22,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:22,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 14:56:22,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:22,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 46 conjunts are in the unsatisfiable core [2021-05-02 14:56:22,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:22,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,422 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,426 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,435 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,442 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,570 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-05-02 14:56:22,598 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:22,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61053785] [2021-05-02 14:56:22,598 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:22,598 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887283575] [2021-05-02 14:56:22,598 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887283575] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:22,598 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:22,598 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 14:56:22,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077441814] [2021-05-02 14:56:22,599 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 14:56:22,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:22,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 14:56:22,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-05-02 14:56:22,599 INFO L87 Difference]: Start difference. First operand 148 states and 209 transitions. Second operand has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-05-02 14:56:22,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:22,943 INFO L93 Difference]: Finished difference Result 156 states and 216 transitions. [2021-05-02 14:56:22,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-05-02 14:56:22,943 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 85 [2021-05-02 14:56:22,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:22,944 INFO L225 Difference]: With dead ends: 156 [2021-05-02 14:56:22,945 INFO L226 Difference]: Without dead ends: 154 [2021-05-02 14:56:22,945 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 209.7ms TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-05-02 14:56:22,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-05-02 14:56:22,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2021-05-02 14:56:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 80 states have (on average 1.1875) internal successors, (95), 87 states have internal predecessors, (95), 60 states have call successors, (60), 12 states have call predecessors, (60), 11 states have return successors, (57), 52 states have call predecessors, (57), 57 states have call successors, (57) [2021-05-02 14:56:22,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 212 transitions. [2021-05-02 14:56:22,959 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 212 transitions. Word has length 85 [2021-05-02 14:56:22,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:22,959 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 212 transitions. [2021-05-02 14:56:22,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 2.0) internal successors, (28), 13 states have internal predecessors, (28), 5 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-05-02 14:56:22,959 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 212 transitions. [2021-05-02 14:56:22,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-05-02 14:56:22,960 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:22,960 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 3, 3, 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] [2021-05-02 14:56:23,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:23,178 INFO L428 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:23,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1507900548, now seen corresponding path program 2 times [2021-05-02 14:56:23,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:23,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013687707] [2021-05-02 14:56:23,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:23,185 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:23,185 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708305919] [2021-05-02 14:56:23,185 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:23,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 14:56:23,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:23,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 32 conjunts are in the unsatisfiable core [2021-05-02 14:56:23,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:23,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:23,422 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 27 proven. 35 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-05-02 14:56:23,423 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:23,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013687707] [2021-05-02 14:56:23,423 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:23,423 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708305919] [2021-05-02 14:56:23,423 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708305919] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:23,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:23,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-05-02 14:56:23,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513900358] [2021-05-02 14:56:23,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-05-02 14:56:23,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:23,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-05-02 14:56:23,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-05-02 14:56:23,424 INFO L87 Difference]: Start difference. First operand 152 states and 212 transitions. Second operand has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-02 14:56:23,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:23,710 INFO L93 Difference]: Finished difference Result 215 states and 319 transitions. [2021-05-02 14:56:23,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 14:56:23,711 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 89 [2021-05-02 14:56:23,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:23,713 INFO L225 Difference]: With dead ends: 215 [2021-05-02 14:56:23,713 INFO L226 Difference]: Without dead ends: 213 [2021-05-02 14:56:23,714 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 71.9ms TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-02 14:56:23,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-05-02 14:56:23,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 186. [2021-05-02 14:56:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 93 states have (on average 1.2150537634408602) internal successors, (113), 100 states have internal predecessors, (113), 80 states have call successors, (80), 13 states have call predecessors, (80), 12 states have return successors, (77), 72 states have call predecessors, (77), 77 states have call successors, (77) [2021-05-02 14:56:23,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 270 transitions. [2021-05-02 14:56:23,755 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 270 transitions. Word has length 89 [2021-05-02 14:56:23,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:23,755 INFO L480 AbstractCegarLoop]: Abstraction has 186 states and 270 transitions. [2021-05-02 14:56:23,755 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 4 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-02 14:56:23,755 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 270 transitions. [2021-05-02 14:56:23,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-05-02 14:56:23,757 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:23,757 INFO L523 BasicCegarLoop]: trace histogram [9, 8, 8, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:23,980 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-05-02 14:56:23,980 INFO L428 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:23,980 INFO L82 PathProgramCache]: Analyzing trace with hash -686534738, now seen corresponding path program 1 times [2021-05-02 14:56:23,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:23,981 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792331995] [2021-05-02 14:56:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:23,986 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:23,986 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1008175294] [2021-05-02 14:56:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:24,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 57 conjunts are in the unsatisfiable core [2021-05-02 14:56:24,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:24,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,116 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,144 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,151 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,183 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,201 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,249 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,330 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,453 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 30 proven. 39 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2021-05-02 14:56:24,476 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:24,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792331995] [2021-05-02 14:56:24,476 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:24,476 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008175294] [2021-05-02 14:56:24,476 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008175294] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:24,476 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:24,476 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-02 14:56:24,476 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428135621] [2021-05-02 14:56:24,477 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 14:56:24,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:24,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 14:56:24,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2021-05-02 14:56:24,477 INFO L87 Difference]: Start difference. First operand 186 states and 270 transitions. Second operand has 17 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2021-05-02 14:56:24,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:24,947 INFO L93 Difference]: Finished difference Result 221 states and 320 transitions. [2021-05-02 14:56:24,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 14:56:24,948 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) Word has length 91 [2021-05-02 14:56:24,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:24,949 INFO L225 Difference]: With dead ends: 221 [2021-05-02 14:56:24,949 INFO L226 Difference]: Without dead ends: 218 [2021-05-02 14:56:24,950 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 351.7ms TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2021-05-02 14:56:24,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-05-02 14:56:24,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 217. [2021-05-02 14:56:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 109 states have (on average 1.2110091743119267) internal successors, (132), 117 states have internal predecessors, (132), 93 states have call successors, (93), 15 states have call predecessors, (93), 14 states have return successors, (90), 84 states have call predecessors, (90), 90 states have call successors, (90) [2021-05-02 14:56:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 315 transitions. [2021-05-02 14:56:24,972 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 315 transitions. Word has length 91 [2021-05-02 14:56:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:24,973 INFO L480 AbstractCegarLoop]: Abstraction has 217 states and 315 transitions. [2021-05-02 14:56:24,973 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 16 states have (on average 1.8125) internal successors, (29), 14 states have internal predecessors, (29), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (15), 6 states have call predecessors, (15), 7 states have call successors, (15) [2021-05-02 14:56:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 315 transitions. [2021-05-02 14:56:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-05-02 14:56:24,974 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:24,974 INFO L523 BasicCegarLoop]: trace histogram [10, 9, 9, 6, 6, 6, 3, 3, 3, 3, 3, 3, 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] [2021-05-02 14:56:25,190 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-05-02 14:56:25,191 INFO L428 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:25,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:25,191 INFO L82 PathProgramCache]: Analyzing trace with hash -663071842, now seen corresponding path program 4 times [2021-05-02 14:56:25,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:25,191 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417080279] [2021-05-02 14:56:25,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:25,208 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:25,209 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446563794] [2021-05-02 14:56:25,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:25,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 14:56:25,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:25,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 14:56:25,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:25,356 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,365 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,421 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-05-02 14:56:25,421 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:25,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417080279] [2021-05-02 14:56:25,421 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:25,421 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446563794] [2021-05-02 14:56:25,421 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446563794] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 14:56:25,422 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 14:56:25,422 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 14:56:25,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482043984] [2021-05-02 14:56:25,423 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 14:56:25,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:25,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 14:56:25,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 14:56:25,424 INFO L87 Difference]: Start difference. First operand 217 states and 315 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-05-02 14:56:25,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:25,500 INFO L93 Difference]: Finished difference Result 265 states and 384 transitions. [2021-05-02 14:56:25,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 14:56:25,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 100 [2021-05-02 14:56:25,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:25,502 INFO L225 Difference]: With dead ends: 265 [2021-05-02 14:56:25,502 INFO L226 Difference]: Without dead ends: 194 [2021-05-02 14:56:25,507 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.1ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-05-02 14:56:25,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-05-02 14:56:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 185. [2021-05-02 14:56:25,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 94 states have (on average 1.148936170212766) internal successors, (108), 101 states have internal predecessors, (108), 76 states have call successors, (76), 15 states have call predecessors, (76), 14 states have return successors, (73), 68 states have call predecessors, (73), 73 states have call successors, (73) [2021-05-02 14:56:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 257 transitions. [2021-05-02 14:56:25,529 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 257 transitions. Word has length 100 [2021-05-02 14:56:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:25,531 INFO L480 AbstractCegarLoop]: Abstraction has 185 states and 257 transitions. [2021-05-02 14:56:25,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-05-02 14:56:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 257 transitions. [2021-05-02 14:56:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-05-02 14:56:25,532 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:25,533 INFO L523 BasicCegarLoop]: trace histogram [12, 11, 11, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:25,751 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-05-02 14:56:25,751 INFO L428 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:25,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:25,752 INFO L82 PathProgramCache]: Analyzing trace with hash -428114403, now seen corresponding path program 1 times [2021-05-02 14:56:25,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:25,752 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492956775] [2021-05-02 14:56:25,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:25,767 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:25,767 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [548009541] [2021-05-02 14:56:25,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:25,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:25,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 73 conjunts are in the unsatisfiable core [2021-05-02 14:56:25,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:25,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:25,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,252 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,273 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,274 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,299 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:26,323 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 87 proven. 52 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2021-05-02 14:56:26,323 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:26,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492956775] [2021-05-02 14:56:26,323 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:26,323 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548009541] [2021-05-02 14:56:26,323 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548009541] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:26,324 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:26,324 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-02 14:56:26,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666961293] [2021-05-02 14:56:26,324 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 14:56:26,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:26,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 14:56:26,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-05-02 14:56:26,325 INFO L87 Difference]: Start difference. First operand 185 states and 257 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-02 14:56:32,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:32,776 INFO L93 Difference]: Finished difference Result 192 states and 263 transitions. [2021-05-02 14:56:32,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 14:56:32,777 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) Word has length 107 [2021-05-02 14:56:32,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:32,778 INFO L225 Difference]: With dead ends: 192 [2021-05-02 14:56:32,778 INFO L226 Difference]: Without dead ends: 190 [2021-05-02 14:56:32,779 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 90 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 322.2ms TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2021-05-02 14:56:32,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-05-02 14:56:32,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 158. [2021-05-02 14:56:32,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 81 states have (on average 1.1481481481481481) internal successors, (93), 87 states have internal predecessors, (93), 63 states have call successors, (63), 14 states have call predecessors, (63), 13 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-02 14:56:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 216 transitions. [2021-05-02 14:56:32,793 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 216 transitions. Word has length 107 [2021-05-02 14:56:32,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:32,793 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 216 transitions. [2021-05-02 14:56:32,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 12 states have internal predecessors, (30), 7 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 6 states have call predecessors, (18), 7 states have call successors, (18) [2021-05-02 14:56:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 216 transitions. [2021-05-02 14:56:32,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-05-02 14:56:32,794 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:32,794 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:32,997 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:32,997 INFO L428 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:32,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:32,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1483033219, now seen corresponding path program 3 times [2021-05-02 14:56:32,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:32,998 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135764178] [2021-05-02 14:56:32,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:33,004 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:33,004 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [596858180] [2021-05-02 14:56:33,004 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:33,064 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-05-02 14:56:33,064 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:33,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 20 conjunts are in the unsatisfiable core [2021-05-02 14:56:33,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:33,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,229 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,293 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 87 proven. 11 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2021-05-02 14:56:33,332 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:33,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135764178] [2021-05-02 14:56:33,332 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:33,332 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596858180] [2021-05-02 14:56:33,332 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596858180] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:33,332 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:33,333 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 14:56:33,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292152759] [2021-05-02 14:56:33,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 14:56:33,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:33,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 14:56:33,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-02 14:56:33,334 INFO L87 Difference]: Start difference. First operand 158 states and 216 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-05-02 14:56:33,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:33,441 INFO L93 Difference]: Finished difference Result 164 states and 221 transitions. [2021-05-02 14:56:33,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 14:56:33,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 111 [2021-05-02 14:56:33,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:33,444 INFO L225 Difference]: With dead ends: 164 [2021-05-02 14:56:33,444 INFO L226 Difference]: Without dead ends: 162 [2021-05-02 14:56:33,445 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 104 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 85.1ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 14:56:33,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-05-02 14:56:33,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 138. [2021-05-02 14:56:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 74 states have (on average 1.1216216216216217) internal successors, (83), 79 states have internal predecessors, (83), 50 states have call successors, (50), 14 states have call predecessors, (50), 13 states have return successors, (47), 44 states have call predecessors, (47), 47 states have call successors, (47) [2021-05-02 14:56:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 180 transitions. [2021-05-02 14:56:33,465 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 180 transitions. Word has length 111 [2021-05-02 14:56:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:33,466 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 180 transitions. [2021-05-02 14:56:33,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-05-02 14:56:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 180 transitions. [2021-05-02 14:56:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-05-02 14:56:33,467 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:33,467 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:33,680 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-05-02 14:56:33,681 INFO L428 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:33,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1185765869, now seen corresponding path program 2 times [2021-05-02 14:56:33,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:33,681 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351584486] [2021-05-02 14:56:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:33,687 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:33,688 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [686479381] [2021-05-02 14:56:33,688 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:33,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 14:56:33,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:33,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 63 conjunts are in the unsatisfiable core [2021-05-02 14:56:33,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:33,776 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,845 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,852 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,854 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:33,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,057 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,473 WARN L205 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2021-05-02 14:56:34,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,533 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 368 backedges. 75 proven. 65 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2021-05-02 14:56:34,580 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:34,580 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351584486] [2021-05-02 14:56:34,581 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:34,581 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686479381] [2021-05-02 14:56:34,581 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686479381] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:34,581 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:34,581 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-02 14:56:34,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903369035] [2021-05-02 14:56:34,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 14:56:34,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:34,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 14:56:34,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-05-02 14:56:34,582 INFO L87 Difference]: Start difference. First operand 138 states and 180 transitions. Second operand has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2021-05-02 14:56:35,185 WARN L205 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2021-05-02 14:56:35,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:35,364 INFO L93 Difference]: Finished difference Result 174 states and 230 transitions. [2021-05-02 14:56:35,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 14:56:35,364 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) Word has length 113 [2021-05-02 14:56:35,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:35,365 INFO L225 Difference]: With dead ends: 174 [2021-05-02 14:56:35,365 INFO L226 Difference]: Without dead ends: 171 [2021-05-02 14:56:35,366 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 850.3ms TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2021-05-02 14:56:35,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-05-02 14:56:35,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 169. [2021-05-02 14:56:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 90 states have (on average 1.1222222222222222) internal successors, (101), 96 states have internal predecessors, (101), 63 states have call successors, (63), 16 states have call predecessors, (63), 15 states have return successors, (60), 56 states have call predecessors, (60), 60 states have call successors, (60) [2021-05-02 14:56:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 224 transitions. [2021-05-02 14:56:35,385 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 224 transitions. Word has length 113 [2021-05-02 14:56:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:35,385 INFO L480 AbstractCegarLoop]: Abstraction has 169 states and 224 transitions. [2021-05-02 14:56:35,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 14 states have internal predecessors, (31), 9 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 7 states have call predecessors, (19), 8 states have call successors, (19) [2021-05-02 14:56:35,386 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 224 transitions. [2021-05-02 14:56:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-05-02 14:56:35,388 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:35,388 INFO L523 BasicCegarLoop]: trace histogram [13, 12, 12, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:35,601 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-05-02 14:56:35,601 INFO L428 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:35,602 INFO L82 PathProgramCache]: Analyzing trace with hash 884638574, now seen corresponding path program 3 times [2021-05-02 14:56:35,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:35,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747798124] [2021-05-02 14:56:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:35,612 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:35,613 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748323895] [2021-05-02 14:56:35,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:35,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 14:56:35,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:35,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-02 14:56:35,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,849 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,876 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,905 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,919 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,920 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,934 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,942 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:35,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,006 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 40 proven. 9 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2021-05-02 14:56:36,006 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:36,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747798124] [2021-05-02 14:56:36,006 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:36,006 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748323895] [2021-05-02 14:56:36,006 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748323895] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:36,006 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:36,006 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-02 14:56:36,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566247981] [2021-05-02 14:56:36,007 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-02 14:56:36,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:36,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-02 14:56:36,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-02 14:56:36,007 INFO L87 Difference]: Start difference. First operand 169 states and 224 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-05-02 14:56:36,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:36,235 INFO L93 Difference]: Finished difference Result 215 states and 301 transitions. [2021-05-02 14:56:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-05-02 14:56:36,236 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 116 [2021-05-02 14:56:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:36,237 INFO L225 Difference]: With dead ends: 215 [2021-05-02 14:56:36,237 INFO L226 Difference]: Without dead ends: 207 [2021-05-02 14:56:36,237 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 104.0ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-05-02 14:56:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-05-02 14:56:36,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 188. [2021-05-02 14:56:36,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 97 states have (on average 1.1546391752577319) internal successors, (112), 99 states have internal predecessors, (112), 75 states have call successors, (75), 16 states have call predecessors, (75), 15 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2021-05-02 14:56:36,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 259 transitions. [2021-05-02 14:56:36,258 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 259 transitions. Word has length 116 [2021-05-02 14:56:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:36,258 INFO L480 AbstractCegarLoop]: Abstraction has 188 states and 259 transitions. [2021-05-02 14:56:36,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-05-02 14:56:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 259 transitions. [2021-05-02 14:56:36,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-05-02 14:56:36,260 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:36,260 INFO L523 BasicCegarLoop]: trace histogram [14, 13, 13, 6, 6, 6, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:36,478 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-05-02 14:56:36,479 INFO L428 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:36,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:36,479 INFO L82 PathProgramCache]: Analyzing trace with hash -743412771, now seen corresponding path program 2 times [2021-05-02 14:56:36,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:36,479 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275771453] [2021-05-02 14:56:36,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:36,485 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:36,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316205610] [2021-05-02 14:56:36,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:36,549 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 14:56:36,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:36,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 31 conjunts are in the unsatisfiable core [2021-05-02 14:56:36,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:36,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,610 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,613 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,620 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,621 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,653 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,660 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,662 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,669 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,670 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,676 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,753 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,761 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,762 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,875 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,911 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,914 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,915 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,925 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,927 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:36,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:37,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:37,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:37,085 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:37,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:37,135 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 49 proven. 62 refuted. 0 times theorem prover too weak. 321 trivial. 0 not checked. [2021-05-02 14:56:37,136 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:37,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275771453] [2021-05-02 14:56:37,136 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:37,136 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316205610] [2021-05-02 14:56:37,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316205610] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:37,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:37,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-05-02 14:56:37,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693613219] [2021-05-02 14:56:37,137 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-05-02 14:56:37,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:37,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-05-02 14:56:37,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-05-02 14:56:37,138 INFO L87 Difference]: Start difference. First operand 188 states and 259 transitions. Second operand has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2021-05-02 14:56:38,603 WARN L205 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 24 [2021-05-02 14:56:39,566 WARN L205 SmtUtils]: Spent 566.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2021-05-02 14:56:39,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:39,672 INFO L93 Difference]: Finished difference Result 267 states and 380 transitions. [2021-05-02 14:56:39,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-05-02 14:56:39,672 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 122 [2021-05-02 14:56:39,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:39,674 INFO L225 Difference]: With dead ends: 267 [2021-05-02 14:56:39,674 INFO L226 Difference]: Without dead ends: 265 [2021-05-02 14:56:39,675 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1783.7ms TimeCoverageRelationStatistics Valid=301, Invalid=1505, Unknown=0, NotChecked=0, Total=1806 [2021-05-02 14:56:39,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-05-02 14:56:39,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 259. [2021-05-02 14:56:39,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 130 states have (on average 1.1692307692307693) internal successors, (152), 132 states have internal predecessors, (152), 111 states have call successors, (111), 18 states have call predecessors, (111), 17 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2021-05-02 14:56:39,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 371 transitions. [2021-05-02 14:56:39,727 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 371 transitions. Word has length 122 [2021-05-02 14:56:39,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:39,727 INFO L480 AbstractCegarLoop]: Abstraction has 259 states and 371 transitions. [2021-05-02 14:56:39,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 8 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2021-05-02 14:56:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 371 transitions. [2021-05-02 14:56:39,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-05-02 14:56:39,728 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:39,728 INFO L523 BasicCegarLoop]: trace histogram [15, 14, 14, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:39,952 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:39,953 INFO L428 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:39,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:39,953 INFO L82 PathProgramCache]: Analyzing trace with hash 541794983, now seen corresponding path program 3 times [2021-05-02 14:56:39,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:39,953 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856143833] [2021-05-02 14:56:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:39,958 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:39,958 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [423149739] [2021-05-02 14:56:39,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:40,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 14:56:40,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:40,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 70 conjunts are in the unsatisfiable core [2021-05-02 14:56:40,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:40,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:40,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:40,063 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:40,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:40,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:40,295 INFO L134 CoverageAnalysis]: Checked inductivity of 489 backedges. 78 proven. 41 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2021-05-02 14:56:40,295 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:40,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856143833] [2021-05-02 14:56:40,295 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:40,295 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423149739] [2021-05-02 14:56:40,296 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423149739] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:40,296 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:40,296 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-05-02 14:56:40,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39027022] [2021-05-02 14:56:40,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-05-02 14:56:40,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:40,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-05-02 14:56:40,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2021-05-02 14:56:40,297 INFO L87 Difference]: Start difference. First operand 259 states and 371 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2021-05-02 14:56:40,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:40,904 INFO L93 Difference]: Finished difference Result 301 states and 423 transitions. [2021-05-02 14:56:40,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 14:56:40,905 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) Word has length 127 [2021-05-02 14:56:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:40,906 INFO L225 Difference]: With dead ends: 301 [2021-05-02 14:56:40,906 INFO L226 Difference]: Without dead ends: 299 [2021-05-02 14:56:40,907 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 241.5ms TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-05-02 14:56:40,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-05-02 14:56:40,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2021-05-02 14:56:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 151 states have (on average 1.1589403973509933) internal successors, (175), 153 states have internal predecessors, (175), 123 states have call successors, (123), 22 states have call predecessors, (123), 21 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-05-02 14:56:40,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 418 transitions. [2021-05-02 14:56:40,934 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 418 transitions. Word has length 127 [2021-05-02 14:56:40,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:40,935 INFO L480 AbstractCegarLoop]: Abstraction has 296 states and 418 transitions. [2021-05-02 14:56:40,935 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 7 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 6 states have call successors, (21) [2021-05-02 14:56:40,935 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 418 transitions. [2021-05-02 14:56:40,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-05-02 14:56:40,936 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:40,936 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:41,151 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:41,151 INFO L428 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:41,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2138166692, now seen corresponding path program 4 times [2021-05-02 14:56:41,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:41,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254010061] [2021-05-02 14:56:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:41,158 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:41,158 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1878205643] [2021-05-02 14:56:41,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:41,264 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 14:56:41,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:41,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 82 conjunts are in the unsatisfiable core [2021-05-02 14:56:41,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:41,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,388 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,443 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,530 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,707 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,709 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:41,918 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 117 proven. 125 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2021-05-02 14:56:41,918 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:41,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254010061] [2021-05-02 14:56:41,919 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:41,919 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878205643] [2021-05-02 14:56:41,919 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878205643] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:41,919 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:41,919 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-05-02 14:56:41,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487754879] [2021-05-02 14:56:41,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-05-02 14:56:41,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:41,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-05-02 14:56:41,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2021-05-02 14:56:41,920 INFO L87 Difference]: Start difference. First operand 296 states and 418 transitions. Second operand has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 9 states have call successors, (22) [2021-05-02 14:56:46,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:46,910 INFO L93 Difference]: Finished difference Result 304 states and 425 transitions. [2021-05-02 14:56:46,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-05-02 14:56:46,910 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 9 states have call successors, (22) Word has length 129 [2021-05-02 14:56:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:46,912 INFO L225 Difference]: With dead ends: 304 [2021-05-02 14:56:46,912 INFO L226 Difference]: Without dead ends: 302 [2021-05-02 14:56:46,912 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 498.7ms TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2021-05-02 14:56:46,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-05-02 14:56:46,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 300. [2021-05-02 14:56:46,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 154 states have (on average 1.155844155844156) internal successors, (178), 156 states have internal predecessors, (178), 123 states have call successors, (123), 23 states have call predecessors, (123), 22 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-05-02 14:56:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 421 transitions. [2021-05-02 14:56:46,940 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 421 transitions. Word has length 129 [2021-05-02 14:56:46,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:46,940 INFO L480 AbstractCegarLoop]: Abstraction has 300 states and 421 transitions. [2021-05-02 14:56:46,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 1.8823529411764706) internal successors, (32), 13 states have internal predecessors, (32), 9 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 7 states have call predecessors, (22), 9 states have call successors, (22) [2021-05-02 14:56:46,940 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 421 transitions. [2021-05-02 14:56:46,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-05-02 14:56:46,941 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:46,941 INFO L523 BasicCegarLoop]: trace histogram [16, 15, 15, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:47,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2021-05-02 14:56:47,157 INFO L428 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:47,157 INFO L82 PathProgramCache]: Analyzing trace with hash -1899875875, now seen corresponding path program 5 times [2021-05-02 14:56:47,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:47,157 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103624119] [2021-05-02 14:56:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:47,163 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:47,163 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1811704095] [2021-05-02 14:56:47,164 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:47,249 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-05-02 14:56:47,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:47,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 14:56:47,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:47,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,302 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,347 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,350 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,390 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,391 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,392 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,393 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,446 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,615 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,617 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,626 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,627 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,704 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,814 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,826 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:47,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,024 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,026 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,037 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,047 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,131 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:48,170 INFO L134 CoverageAnalysis]: Checked inductivity of 550 backedges. 97 proven. 147 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2021-05-02 14:56:48,170 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:48,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103624119] [2021-05-02 14:56:48,170 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:48,170 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811704095] [2021-05-02 14:56:48,170 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811704095] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:48,170 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:48,170 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-02 14:56:48,170 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876721461] [2021-05-02 14:56:48,171 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-05-02 14:56:48,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:48,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-05-02 14:56:48,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2021-05-02 14:56:48,171 INFO L87 Difference]: Start difference. First operand 300 states and 421 transitions. Second operand has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2021-05-02 14:56:49,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:49,282 INFO L93 Difference]: Finished difference Result 323 states and 440 transitions. [2021-05-02 14:56:49,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 14:56:49,283 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) Word has length 132 [2021-05-02 14:56:49,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:49,284 INFO L225 Difference]: With dead ends: 323 [2021-05-02 14:56:49,284 INFO L226 Difference]: Without dead ends: 321 [2021-05-02 14:56:49,285 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 958.3ms TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2021-05-02 14:56:49,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2021-05-02 14:56:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 316. [2021-05-02 14:56:49,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 166 states have (on average 1.144578313253012) internal successors, (190), 168 states have internal predecessors, (190), 123 states have call successors, (123), 27 states have call predecessors, (123), 26 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2021-05-02 14:56:49,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 433 transitions. [2021-05-02 14:56:49,316 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 433 transitions. Word has length 132 [2021-05-02 14:56:49,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:49,317 INFO L480 AbstractCegarLoop]: Abstraction has 316 states and 433 transitions. [2021-05-02 14:56:49,317 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 20 states, 18 states have (on average 1.9444444444444444) internal successors, (35), 15 states have internal predecessors, (35), 10 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2021-05-02 14:56:49,317 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 433 transitions. [2021-05-02 14:56:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-05-02 14:56:49,318 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:49,318 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1] [2021-05-02 14:56:49,528 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-05-02 14:56:49,529 INFO L428 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:49,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1068997356, now seen corresponding path program 4 times [2021-05-02 14:56:49,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:49,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796251070] [2021-05-02 14:56:49,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:49,534 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:49,535 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1929958860] [2021-05-02 14:56:49,535 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:49,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-02 14:56:49,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:49,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 56 conjunts are in the unsatisfiable core [2021-05-02 14:56:49,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:49,677 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,696 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,751 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,757 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,764 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,812 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,813 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,881 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,926 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,928 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,936 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,945 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:49,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:50,078 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:50,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:50,102 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 35 proven. 59 refuted. 0 times theorem prover too weak. 516 trivial. 0 not checked. [2021-05-02 14:56:50,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:50,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796251070] [2021-05-02 14:56:50,102 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:50,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1929958860] [2021-05-02 14:56:50,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1929958860] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:50,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:50,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2021-05-02 14:56:50,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252115164] [2021-05-02 14:56:50,103 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-05-02 14:56:50,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-05-02 14:56:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-05-02 14:56:50,103 INFO L87 Difference]: Start difference. First operand 316 states and 433 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2021-05-02 14:56:50,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:50,688 INFO L93 Difference]: Finished difference Result 396 states and 544 transitions. [2021-05-02 14:56:50,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-05-02 14:56:50,689 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) Word has length 135 [2021-05-02 14:56:50,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:50,690 INFO L225 Difference]: With dead ends: 396 [2021-05-02 14:56:50,690 INFO L226 Difference]: Without dead ends: 326 [2021-05-02 14:56:50,691 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 377.1ms TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-05-02 14:56:50,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-05-02 14:56:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 326. [2021-05-02 14:56:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 171 states have (on average 1.1403508771929824) internal successors, (195), 173 states have internal predecessors, (195), 127 states have call successors, (127), 28 states have call predecessors, (127), 27 states have return successors, (124), 124 states have call predecessors, (124), 124 states have call successors, (124) [2021-05-02 14:56:50,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 446 transitions. [2021-05-02 14:56:50,721 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 446 transitions. Word has length 135 [2021-05-02 14:56:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:50,722 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 446 transitions. [2021-05-02 14:56:50,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (23), 8 states have call predecessors, (23), 8 states have call successors, (23) [2021-05-02 14:56:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 446 transitions. [2021-05-02 14:56:50,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-05-02 14:56:50,722 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:50,723 INFO L523 BasicCegarLoop]: trace histogram [17, 16, 16, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:50,936 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:50,937 INFO L428 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:50,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:50,937 INFO L82 PathProgramCache]: Analyzing trace with hash -896647763, now seen corresponding path program 5 times [2021-05-02 14:56:50,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:50,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183593703] [2021-05-02 14:56:50,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:50,942 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:50,942 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [119953302] [2021-05-02 14:56:50,942 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:51,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-05-02 14:56:51,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:51,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 96 conjunts are in the unsatisfiable core [2021-05-02 14:56:51,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:51,075 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,076 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,103 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,280 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,289 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,310 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,331 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,337 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,506 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,514 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,522 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,563 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,622 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 99 proven. 156 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2021-05-02 14:56:51,810 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:51,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183593703] [2021-05-02 14:56:51,810 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:51,810 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119953302] [2021-05-02 14:56:51,810 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119953302] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:51,810 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:51,811 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 14:56:51,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416317244] [2021-05-02 14:56:51,811 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 14:56:51,811 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:51,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 14:56:51,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2021-05-02 14:56:51,812 INFO L87 Difference]: Start difference. First operand 326 states and 446 transitions. Second operand has 21 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) [2021-05-02 14:56:52,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:52,889 INFO L93 Difference]: Finished difference Result 380 states and 516 transitions. [2021-05-02 14:56:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-05-02 14:56:52,890 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) Word has length 138 [2021-05-02 14:56:52,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:52,891 INFO L225 Difference]: With dead ends: 380 [2021-05-02 14:56:52,891 INFO L226 Difference]: Without dead ends: 378 [2021-05-02 14:56:52,892 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 754.5ms TimeCoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-05-02 14:56:52,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-05-02 14:56:52,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 345. [2021-05-02 14:56:52,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 182 states have (on average 1.1428571428571428) internal successors, (208), 185 states have internal predecessors, (208), 132 states have call successors, (132), 31 states have call predecessors, (132), 30 states have return successors, (129), 128 states have call predecessors, (129), 129 states have call successors, (129) [2021-05-02 14:56:52,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 469 transitions. [2021-05-02 14:56:52,929 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 469 transitions. Word has length 138 [2021-05-02 14:56:52,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:52,929 INFO L480 AbstractCegarLoop]: Abstraction has 345 states and 469 transitions. [2021-05-02 14:56:52,929 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 20 states have (on average 1.8) internal successors, (36), 17 states have internal predecessors, (36), 9 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) [2021-05-02 14:56:52,930 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 469 transitions. [2021-05-02 14:56:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-05-02 14:56:52,931 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:52,931 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:53,146 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-05-02 14:56:53,146 INFO L428 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:53,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:53,147 INFO L82 PathProgramCache]: Analyzing trace with hash -206620137, now seen corresponding path program 1 times [2021-05-02 14:56:53,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:53,147 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852512080] [2021-05-02 14:56:53,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:53,154 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:53,154 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [793298358] [2021-05-02 14:56:53,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 14:56:53,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 69 conjunts are in the unsatisfiable core [2021-05-02 14:56:53,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:53,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,271 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,272 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,297 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,304 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,335 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,336 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,415 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,423 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,424 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,433 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,455 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,501 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,518 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,526 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,559 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,574 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:53,726 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 59 proven. 123 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2021-05-02 14:56:53,727 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:56:53,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852512080] [2021-05-02 14:56:53,727 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:56:53,727 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793298358] [2021-05-02 14:56:53,727 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793298358] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:56:53,727 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:56:53,727 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-02 14:56:53,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478209021] [2021-05-02 14:56:53,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 14:56:53,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:56:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 14:56:53,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-05-02 14:56:53,728 INFO L87 Difference]: Start difference. First operand 345 states and 469 transitions. Second operand has 19 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2021-05-02 14:56:54,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 14:56:54,588 INFO L93 Difference]: Finished difference Result 355 states and 478 transitions. [2021-05-02 14:56:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 14:56:54,588 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 143 [2021-05-02 14:56:54,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 14:56:54,590 INFO L225 Difference]: With dead ends: 355 [2021-05-02 14:56:54,590 INFO L226 Difference]: Without dead ends: 351 [2021-05-02 14:56:54,590 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 123 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 499.3ms TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2021-05-02 14:56:54,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-05-02 14:56:54,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 348. [2021-05-02 14:56:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 185 states have (on average 1.135135135135135) internal successors, (210), 187 states have internal predecessors, (210), 131 states have call successors, (131), 32 states have call predecessors, (131), 31 states have return successors, (128), 128 states have call predecessors, (128), 128 states have call successors, (128) [2021-05-02 14:56:54,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 469 transitions. [2021-05-02 14:56:54,635 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 469 transitions. Word has length 143 [2021-05-02 14:56:54,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 14:56:54,636 INFO L480 AbstractCegarLoop]: Abstraction has 348 states and 469 transitions. [2021-05-02 14:56:54,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 2.0) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2021-05-02 14:56:54,636 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 469 transitions. [2021-05-02 14:56:54,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-05-02 14:56:54,636 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 14:56:54,637 INFO L523 BasicCegarLoop]: trace histogram [18, 17, 17, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 14:56:54,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-05-02 14:56:54,853 INFO L428 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 14:56:54,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 14:56:54,853 INFO L82 PathProgramCache]: Analyzing trace with hash 391502270, now seen corresponding path program 6 times [2021-05-02 14:56:54,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 14:56:54,853 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155527340] [2021-05-02 14:56:54,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 14:56:54,866 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 14:56:54,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426158994] [2021-05-02 14:56:54,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 14:56:55,004 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-05-02 14:56:55,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 14:56:55,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 80 conjunts are in the unsatisfiable core [2021-05-02 14:56:55,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 14:56:55,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,042 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,186 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,218 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,239 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,348 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,349 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,434 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,450 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,452 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,498 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,512 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,513 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,525 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:55,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:56:57,625 WARN L205 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 29 [2021-05-02 14:57:28,344 WARN L205 SmtUtils]: Spent 20.37 s on a formula simplification that was a NOOP. DAG size: 30 [2021-05-02 14:57:45,848 WARN L205 SmtUtils]: Spent 10.95 s on a formula simplification that was a NOOP. DAG size: 27 [2021-05-02 14:57:45,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:45,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,894 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,895 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,897 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,898 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,899 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,901 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,902 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,903 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,940 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,943 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,947 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,948 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,953 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,962 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,964 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,965 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,969 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,970 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,972 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,981 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,982 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,985 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,989 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,990 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,991 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,998 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:47,999 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,000 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,002 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,004 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,012 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,013 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,014 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:48,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,086 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,087 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,089 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,090 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,091 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,092 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,093 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,094 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:50,104 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,171 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,173 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,176 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:57:52,178 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:08,777 WARN L205 SmtUtils]: Spent 12.17 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 14:58:08,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:08,781 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,827 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,829 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,830 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,832 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,833 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,834 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,838 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:10,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,861 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,864 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,866 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,867 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,869 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,870 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,871 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,872 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,873 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,874 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:12,877 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:29,632 WARN L205 SmtUtils]: Spent 10.15 s on a formula simplification that was a NOOP. DAG size: 32 [2021-05-02 14:58:29,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:29,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,678 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,680 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,681 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,688 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,689 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,690 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,691 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,693 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:31,695 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,730 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,731 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,732 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,733 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,734 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,735 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:33,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 14:58:35,783 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_102 Int) (v_main_~r~0_BEFORE_CALL_162 Int) (v_main_~y~0_BEFORE_CALL_215 Int) (v_main_~x~0_BEFORE_CALL_263 Int)) (let ((.cse0 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215)) (.cse1 (* v_main_~y~0_BEFORE_CALL_215 v_main_~x~0_BEFORE_CALL_263))) (and (not (= v_main_~a~0_BEFORE_CALL_102 (+ .cse0 v_main_~x~0_BEFORE_CALL_263))) (< v_main_~y~0_BEFORE_CALL_215 (* 2 v_main_~a~0_BEFORE_CALL_102)) (< v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) (= (+ .cse0 (* v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) v_main_~x~0_BEFORE_CALL_263) (+ v_main_~a~0_BEFORE_CALL_102 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215 v_main_~y~0_BEFORE_CALL_215) .cse1)) (<= 0 v_main_~x~0_BEFORE_CALL_263) (< .cse1 2147483647) (<= v_main_~x~0_BEFORE_CALL_263 5)))) is different from false [2021-05-02 14:58:57,845 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_102 Int) (v_main_~r~0_BEFORE_CALL_162 Int) (v_main_~y~0_BEFORE_CALL_215 Int) (v_main_~x~0_BEFORE_CALL_263 Int)) (let ((.cse0 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215)) (.cse1 (* v_main_~y~0_BEFORE_CALL_215 v_main_~x~0_BEFORE_CALL_263))) (and (not (= v_main_~a~0_BEFORE_CALL_102 (+ .cse0 v_main_~x~0_BEFORE_CALL_263))) (< v_main_~y~0_BEFORE_CALL_215 (* 2 v_main_~a~0_BEFORE_CALL_102)) (< v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) (= (+ .cse0 (* v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) v_main_~x~0_BEFORE_CALL_263) (+ v_main_~a~0_BEFORE_CALL_102 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215 v_main_~y~0_BEFORE_CALL_215) .cse1)) (<= 0 v_main_~x~0_BEFORE_CALL_263) (< .cse1 2147483647) (<= v_main_~x~0_BEFORE_CALL_263 5)))) is different from true [2021-05-02 14:58:57,846 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 110 proven. 83 refuted. 4 times theorem prover too weak. 496 trivial. 0 not checked. [2021-05-02 14:58:57,846 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 14:58:57,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155527340] [2021-05-02 14:58:57,846 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 14:58:57,846 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426158994] [2021-05-02 14:58:57,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426158994] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 14:58:57,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 14:58:57,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2021-05-02 14:58:57,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334729124] [2021-05-02 14:58:57,847 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 14:58:57,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 14:58:57,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 14:58:57,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=313, Unknown=15, NotChecked=36, Total=420 [2021-05-02 14:58:57,847 INFO L87 Difference]: Start difference. First operand 348 states and 469 transitions. Second operand has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 9 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-05-02 14:59:14,680 WARN L205 SmtUtils]: Spent 8.13 s on a formula simplification. DAG size of input: 40 DAG size of output: 6 [2021-05-02 14:59:34,208 WARN L205 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 42 DAG size of output: 38 [2021-05-02 15:01:29,369 WARN L205 SmtUtils]: Spent 1.22 m on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2021-05-02 15:02:22,750 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (exists ((v_main_~a~0_BEFORE_CALL_102 Int) (v_main_~r~0_BEFORE_CALL_162 Int) (v_main_~y~0_BEFORE_CALL_215 Int) (v_main_~x~0_BEFORE_CALL_263 Int)) (let ((.cse1 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215)) (.cse2 (* v_main_~y~0_BEFORE_CALL_215 v_main_~x~0_BEFORE_CALL_263))) (and (not (= v_main_~a~0_BEFORE_CALL_102 (+ .cse1 v_main_~x~0_BEFORE_CALL_263))) (< v_main_~y~0_BEFORE_CALL_215 (* 2 v_main_~a~0_BEFORE_CALL_102)) (< v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) (= (+ .cse1 (* v_main_~a~0_BEFORE_CALL_102 v_main_~y~0_BEFORE_CALL_215) v_main_~x~0_BEFORE_CALL_263) (+ v_main_~a~0_BEFORE_CALL_102 (* v_main_~r~0_BEFORE_CALL_162 v_main_~y~0_BEFORE_CALL_215 v_main_~y~0_BEFORE_CALL_215) .cse2)) (<= 0 v_main_~x~0_BEFORE_CALL_263) (< .cse2 2147483647) (<= v_main_~x~0_BEFORE_CALL_263 5)))))) (and (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond) .cse0 (or (= c___VERIFIER_assert_~cond 1) (and (= c___VERIFIER_assert_~cond 0) .cse0)))) is different from false [2021-05-02 15:02:26,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:02:26,852 INFO L93 Difference]: Finished difference Result 374 states and 495 transitions. [2021-05-02 15:02:26,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 15:02:26,854 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 9 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) Word has length 144 [2021-05-02 15:02:26,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:02:26,855 INFO L225 Difference]: With dead ends: 374 [2021-05-02 15:02:26,855 INFO L226 Difference]: Without dead ends: 372 [2021-05-02 15:02:26,856 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 207013.0ms TimeCoverageRelationStatistics Valid=103, Invalid=639, Unknown=22, NotChecked=106, Total=870 [2021-05-02 15:02:26,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-05-02 15:02:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 370. [2021-05-02 15:02:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 201 states have (on average 1.1243781094527363) internal successors, (226), 204 states have internal predecessors, (226), 133 states have call successors, (133), 36 states have call predecessors, (133), 35 states have return successors, (130), 129 states have call predecessors, (130), 130 states have call successors, (130) [2021-05-02 15:02:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 489 transitions. [2021-05-02 15:02:26,892 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 489 transitions. Word has length 144 [2021-05-02 15:02:26,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:02:26,892 INFO L480 AbstractCegarLoop]: Abstraction has 370 states and 489 transitions. [2021-05-02 15:02:26,892 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 1.894736842105263) internal successors, (36), 18 states have internal predecessors, (36), 9 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 9 states have call predecessors, (20), 9 states have call successors, (20) [2021-05-02 15:02:26,892 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 489 transitions. [2021-05-02 15:02:26,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-05-02 15:02:26,893 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:02:26,893 INFO L523 BasicCegarLoop]: trace histogram [19, 18, 18, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:02:27,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:02:27,097 INFO L428 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:02:27,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:02:27,097 INFO L82 PathProgramCache]: Analyzing trace with hash -604751514, now seen corresponding path program 7 times [2021-05-02 15:02:27,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:02:27,097 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220294532] [2021-05-02 15:02:27,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:02:27,106 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:02:27,106 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1516293845] [2021-05-02 15:02:27,106 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:02:27,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:02:27,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 100 conjunts are in the unsatisfiable core [2021-05-02 15:02:27,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:02:27,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,305 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,307 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,317 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,387 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,413 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,427 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,428 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,686 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,736 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,737 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,738 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,739 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:27,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,010 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,111 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,113 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,262 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,453 WARN L205 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 29 [2021-05-02 15:02:28,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,603 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:28,667 INFO L134 CoverageAnalysis]: Checked inductivity of 767 backedges. 106 proven. 208 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2021-05-02 15:02:28,668 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:02:28,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220294532] [2021-05-02 15:02:28,668 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:02:28,668 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516293845] [2021-05-02 15:02:28,668 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516293845] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:02:28,668 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:02:28,668 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2021-05-02 15:02:28,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57464014] [2021-05-02 15:02:28,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2021-05-02 15:02:28,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:02:28,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-05-02 15:02:28,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2021-05-02 15:02:28,669 INFO L87 Difference]: Start difference. First operand 370 states and 489 transitions. Second operand has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) [2021-05-02 15:02:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:02:30,366 INFO L93 Difference]: Finished difference Result 437 states and 579 transitions. [2021-05-02 15:02:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 15:02:30,367 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) Word has length 149 [2021-05-02 15:02:30,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:02:30,369 INFO L225 Difference]: With dead ends: 437 [2021-05-02 15:02:30,369 INFO L226 Difference]: Without dead ends: 435 [2021-05-02 15:02:30,370 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1371.7ms TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2021-05-02 15:02:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-05-02 15:02:30,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 432. [2021-05-02 15:02:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 234 states have (on average 1.123931623931624) internal successors, (263), 237 states have internal predecessors, (263), 157 states have call successors, (157), 41 states have call predecessors, (157), 40 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154) [2021-05-02 15:02:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 574 transitions. [2021-05-02 15:02:30,439 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 574 transitions. Word has length 149 [2021-05-02 15:02:30,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:02:30,439 INFO L480 AbstractCegarLoop]: Abstraction has 432 states and 574 transitions. [2021-05-02 15:02:30,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 22 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 17 states have internal predecessors, (37), 12 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 12 states have call successors, (25) [2021-05-02 15:02:30,439 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 574 transitions. [2021-05-02 15:02:30,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-05-02 15:02:30,440 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:02:30,440 INFO L523 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:02:30,657 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:02:30,657 INFO L428 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:02:30,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:02:30,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1672449564, now seen corresponding path program 8 times [2021-05-02 15:02:30,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:02:30,657 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180684897] [2021-05-02 15:02:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:02:30,662 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:02:30,662 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1761006228] [2021-05-02 15:02:30,662 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:02:30,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:02:30,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:02:30,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 74 conjunts are in the unsatisfiable core [2021-05-02 15:02:30,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:02:30,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,859 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,892 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,893 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,958 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,974 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,977 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:30,978 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,052 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,065 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,067 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,068 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,081 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,083 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,096 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,097 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,098 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,099 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,341 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,344 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,345 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,359 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,360 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,361 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,362 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,363 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,364 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,379 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,381 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,394 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,520 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,521 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,523 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,539 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,540 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,542 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,543 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,544 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,545 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,560 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,561 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,562 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,564 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,565 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,566 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,583 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,585 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,587 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,606 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,768 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,771 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,772 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,773 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,786 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,787 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,790 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,804 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,808 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,946 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,949 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,951 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,954 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,955 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,956 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,957 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:31,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,034 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,036 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,038 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,039 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,040 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,049 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,050 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,051 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,053 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,054 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,055 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,058 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,136 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,138 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,143 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,146 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,174 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,193 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,213 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,216 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,233 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,235 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,236 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,237 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,241 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,250 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,251 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,309 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,311 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,315 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,316 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,319 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,320 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,322 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,324 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,466 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 97 proven. 82 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2021-05-02 15:02:32,529 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:02:32,529 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180684897] [2021-05-02 15:02:32,529 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:02:32,530 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761006228] [2021-05-02 15:02:32,530 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761006228] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:02:32,530 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:02:32,530 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 15:02:32,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335252552] [2021-05-02 15:02:32,530 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 15:02:32,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:02:32,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 15:02:32,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2021-05-02 15:02:32,531 INFO L87 Difference]: Start difference. First operand 432 states and 574 transitions. Second operand has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) [2021-05-02 15:02:34,226 WARN L205 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2021-05-02 15:02:34,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:02:34,724 INFO L93 Difference]: Finished difference Result 447 states and 587 transitions. [2021-05-02 15:02:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-05-02 15:02:34,726 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) Word has length 154 [2021-05-02 15:02:34,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:02:34,730 INFO L225 Difference]: With dead ends: 447 [2021-05-02 15:02:34,730 INFO L226 Difference]: Without dead ends: 445 [2021-05-02 15:02:34,730 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1696.1ms TimeCoverageRelationStatistics Valid=122, Invalid=748, Unknown=0, NotChecked=0, Total=870 [2021-05-02 15:02:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2021-05-02 15:02:34,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 440. [2021-05-02 15:02:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 240 states have (on average 1.1208333333333333) internal successors, (269), 243 states have internal predecessors, (269), 157 states have call successors, (157), 43 states have call predecessors, (157), 42 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154) [2021-05-02 15:02:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 580 transitions. [2021-05-02 15:02:34,782 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 580 transitions. Word has length 154 [2021-05-02 15:02:34,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:02:34,797 INFO L480 AbstractCegarLoop]: Abstraction has 440 states and 580 transitions. [2021-05-02 15:02:34,797 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 10 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 10 states have call predecessors, (26), 9 states have call successors, (26) [2021-05-02 15:02:34,797 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 580 transitions. [2021-05-02 15:02:34,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-05-02 15:02:34,798 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:02:34,798 INFO L523 BasicCegarLoop]: trace histogram [20, 19, 19, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:02:35,027 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2021-05-02 15:02:35,028 INFO L428 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:02:35,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:02:35,028 INFO L82 PathProgramCache]: Analyzing trace with hash -2059109762, now seen corresponding path program 9 times [2021-05-02 15:02:35,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:02:35,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676813146] [2021-05-02 15:02:35,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:02:35,032 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:02:35,032 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2041444737] [2021-05-02 15:02:35,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:02:35,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-05-02 15:02:35,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:02:35,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 75 conjunts are in the unsatisfiable core [2021-05-02 15:02:35,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:02:35,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,215 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,227 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,279 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,290 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,292 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,312 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,325 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,338 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,352 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,353 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,371 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,386 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,412 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,664 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,682 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,683 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,684 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,685 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,805 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,807 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,821 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,824 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,840 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:35,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:36,141 WARN L205 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2021-05-02 15:02:38,159 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0))) (and (= .cse0 c_main_~yy~0) (= (* c_main_~x~0 c_main_~y~0) c_main_~xy~0) (= c_main_~p~0 0) (<= c_main_~x~0 5) (= c_main_~r~0 1) (<= 0 c_main_~x~0) (< 0 c_main_~c~0) (= c_main_~k~0 1) (= (+ (* c_main_~y~0 c_main_~s~0) .cse0 (* c_main_~x~0 c_main_~q~0) c_main_~c~0) (+ c_main_~y~0 (* c_main_~xy~0 c_main_~q~0) (* c_main_~y~0 c_main_~c~0) (* c_main_~yy~0 c_main_~s~0))) (= c_main_~q~0 1) (< (* 2 c_main_~c~0) c_main_~y~0))) is different from false [2021-05-02 15:02:59,573 WARN L205 SmtUtils]: Spent 15.51 s on a formula simplification that was a NOOP. DAG size: 29 [2021-05-02 15:02:59,584 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:59,586 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:59,609 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:02:59,611 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,629 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,630 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,646 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:01,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,631 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,634 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,635 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,636 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,637 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,640 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,641 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,642 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,643 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:04,647 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:07,331 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~s~0_BEFORE_CALL_252 Int) (v_main_~x~0_BEFORE_CALL_333 Int) (v_main_~y~0_BEFORE_CALL_280 Int) (v_main_~b~0_BEFORE_CALL_288 Int)) (and (< 0 v_main_~b~0_BEFORE_CALL_288) (= (+ v_main_~x~0_BEFORE_CALL_333 v_main_~b~0_BEFORE_CALL_288 (* v_main_~s~0_BEFORE_CALL_252 v_main_~y~0_BEFORE_CALL_280 v_main_~y~0_BEFORE_CALL_280)) (+ (* v_main_~s~0_BEFORE_CALL_252 v_main_~y~0_BEFORE_CALL_280) (* v_main_~x~0_BEFORE_CALL_333 v_main_~y~0_BEFORE_CALL_280) (* v_main_~y~0_BEFORE_CALL_280 v_main_~b~0_BEFORE_CALL_288))) (<= v_main_~x~0_BEFORE_CALL_333 5) (< (* 2 v_main_~b~0_BEFORE_CALL_288) v_main_~y~0_BEFORE_CALL_280) (<= 0 v_main_~x~0_BEFORE_CALL_333))) is different from true [2021-05-02 15:03:07,332 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:07,334 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,377 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,378 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,395 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,396 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,401 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,402 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,403 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,404 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,405 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,406 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,408 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:09,409 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,478 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,480 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,481 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,483 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,485 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,486 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,490 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,491 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,492 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,493 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,494 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,497 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,500 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,502 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,524 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:11,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:13,571 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:13,573 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:13,575 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:13,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:13,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:13,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:16,003 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2021-05-02 15:03:16,006 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:16,008 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:18,867 INFO L134 CoverageAnalysis]: Checked inductivity of 845 backedges. 162 proven. 78 refuted. 1 times theorem prover too weak. 599 trivial. 5 not checked. [2021-05-02 15:03:18,867 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:03:18,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676813146] [2021-05-02 15:03:18,867 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:03:18,867 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041444737] [2021-05-02 15:03:18,867 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041444737] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:03:18,867 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:03:18,867 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2021-05-02 15:03:18,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453003565] [2021-05-02 15:03:18,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2021-05-02 15:03:18,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:03:18,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-05-02 15:03:18,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=5, NotChecked=62, Total=342 [2021-05-02 15:03:18,868 INFO L87 Difference]: Start difference. First operand 440 states and 580 transitions. Second operand has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 6 states have call successors, (22) [2021-05-02 15:03:26,047 WARN L205 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2021-05-02 15:03:28,188 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~y~0 c_main_~y~0)) (.cse1 (* c_main_~y~0 c_main_~s~0)) (.cse2 (* c_main_~x~0 c_main_~q~0)) (.cse3 (* c_main_~xy~0 c_main_~q~0)) (.cse4 (* c_main_~yy~0 c_main_~s~0))) (and (= .cse0 c_main_~yy~0) (= c_main_~p~0 0) (= c_main_~r~0 1) (= (+ .cse1 .cse0 .cse2 c_main_~c~0) (+ c_main_~y~0 .cse3 (* c_main_~y~0 c_main_~c~0) .cse4)) (= c_main_~q~0 1) (= (+ .cse1 (* c_main_~y~0 c_main_~b~0) .cse2) (+ .cse3 c_main_~b~0 .cse4)) (= c_main_~y~0 (+ c_main_~b~0 c_main_~c~0)) (< (* 2 c_main_~c~0) c_main_~y~0) (= (* c_main_~x~0 c_main_~y~0) c_main_~xy~0) (<= c_main_~x~0 5) (<= 0 c_main_~x~0) (< 0 c_main_~c~0) (< c_main_~b~0 c_main_~a~0) (= c_main_~k~0 1) (= c_main_~a~0 c_main_~y~0))) is different from false [2021-05-02 15:03:48,979 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((v_main_~s~0_BEFORE_CALL_252 Int) (v_main_~x~0_BEFORE_CALL_333 Int) (v_main_~y~0_BEFORE_CALL_280 Int) (v_main_~b~0_BEFORE_CALL_288 Int)) (and (< 0 v_main_~b~0_BEFORE_CALL_288) (= (+ v_main_~x~0_BEFORE_CALL_333 v_main_~b~0_BEFORE_CALL_288 (* v_main_~s~0_BEFORE_CALL_252 v_main_~y~0_BEFORE_CALL_280 v_main_~y~0_BEFORE_CALL_280)) (+ (* v_main_~s~0_BEFORE_CALL_252 v_main_~y~0_BEFORE_CALL_280) (* v_main_~x~0_BEFORE_CALL_333 v_main_~y~0_BEFORE_CALL_280) (* v_main_~y~0_BEFORE_CALL_280 v_main_~b~0_BEFORE_CALL_288))) (<= v_main_~x~0_BEFORE_CALL_333 5) (< (* 2 v_main_~b~0_BEFORE_CALL_288) v_main_~y~0_BEFORE_CALL_280) (<= 0 v_main_~x~0_BEFORE_CALL_333))) (= |c___VERIFIER_assert_#in~cond| c___VERIFIER_assert_~cond)) is different from false [2021-05-02 15:03:55,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:03:55,725 INFO L93 Difference]: Finished difference Result 481 states and 629 transitions. [2021-05-02 15:03:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-05-02 15:03:55,727 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 6 states have call successors, (22) Word has length 154 [2021-05-02 15:03:55,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:03:55,729 INFO L225 Difference]: With dead ends: 481 [2021-05-02 15:03:55,729 INFO L226 Difference]: Without dead ends: 479 [2021-05-02 15:03:55,729 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 38622.5ms TimeCoverageRelationStatistics Valid=83, Invalid=431, Unknown=8, NotChecked=180, Total=702 [2021-05-02 15:03:55,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-05-02 15:03:55,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 471. [2021-05-02 15:03:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 257 states have (on average 1.1245136186770428) internal successors, (289), 259 states have internal predecessors, (289), 167 states have call successors, (167), 47 states have call predecessors, (167), 46 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2021-05-02 15:03:55,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 620 transitions. [2021-05-02 15:03:55,799 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 620 transitions. Word has length 154 [2021-05-02 15:03:55,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:03:55,799 INFO L480 AbstractCegarLoop]: Abstraction has 471 states and 620 transitions. [2021-05-02 15:03:55,799 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 19 states, 18 states have (on average 2.111111111111111) internal successors, (38), 16 states have internal predecessors, (38), 7 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 6 states have call successors, (22) [2021-05-02 15:03:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 620 transitions. [2021-05-02 15:03:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-05-02 15:03:55,800 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:03:55,800 INFO L523 BasicCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:03:56,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:03:56,013 INFO L428 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:03:56,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:03:56,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1023835477, now seen corresponding path program 6 times [2021-05-02 15:03:56,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:03:56,013 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634712806] [2021-05-02 15:03:56,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:03:56,017 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:03:56,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1793888627] [2021-05-02 15:03:56,017 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:03:56,094 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-05-02 15:03:56,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:03:56,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 49 conjunts are in the unsatisfiable core [2021-05-02 15:03:56,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:03:56,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,211 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,257 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,268 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,281 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,283 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,300 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,301 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,313 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,314 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,326 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,327 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,339 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,340 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,357 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,358 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,370 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,372 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,418 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,430 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,432 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,458 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,474 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,475 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,554 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,567 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,568 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,581 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,793 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:03:56,854 INFO L134 CoverageAnalysis]: Checked inductivity of 922 backedges. 96 proven. 34 refuted. 0 times theorem prover too weak. 792 trivial. 0 not checked. [2021-05-02 15:03:56,854 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:03:56,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634712806] [2021-05-02 15:03:56,854 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:03:56,854 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793888627] [2021-05-02 15:03:56,854 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793888627] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:03:56,854 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:03:56,854 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2021-05-02 15:03:56,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531675868] [2021-05-02 15:03:56,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 15:03:56,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:03:56,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 15:03:56,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-05-02 15:03:56,855 INFO L87 Difference]: Start difference. First operand 471 states and 620 transitions. Second operand has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-02 15:03:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:03:59,635 INFO L93 Difference]: Finished difference Result 479 states and 627 transitions. [2021-05-02 15:03:59,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-05-02 15:03:59,636 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 157 [2021-05-02 15:03:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:03:59,638 INFO L225 Difference]: With dead ends: 479 [2021-05-02 15:03:59,638 INFO L226 Difference]: Without dead ends: 476 [2021-05-02 15:03:59,638 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 527.7ms TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-05-02 15:03:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2021-05-02 15:03:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 474. [2021-05-02 15:03:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 260 states have (on average 1.1192307692307693) internal successors, (291), 261 states have internal predecessors, (291), 166 states have call successors, (166), 48 states have call predecessors, (166), 47 states have return successors, (164), 164 states have call predecessors, (164), 164 states have call successors, (164) [2021-05-02 15:03:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 621 transitions. [2021-05-02 15:03:59,702 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 621 transitions. Word has length 157 [2021-05-02 15:03:59,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:03:59,703 INFO L480 AbstractCegarLoop]: Abstraction has 474 states and 621 transitions. [2021-05-02 15:03:59,703 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 11 states have internal predecessors, (28), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-05-02 15:03:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 621 transitions. [2021-05-02 15:03:59,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-05-02 15:03:59,704 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:03:59,704 INFO L523 BasicCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:03:59,919 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2021-05-02 15:03:59,919 INFO L428 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:03:59,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:03:59,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1001336492, now seen corresponding path program 7 times [2021-05-02 15:03:59,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:03:59,919 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039171116] [2021-05-02 15:03:59,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:03:59,923 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:03:59,923 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130909569] [2021-05-02 15:03:59,923 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:03:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 15:03:59,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 91 conjunts are in the unsatisfiable core [2021-05-02 15:03:59,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:04:00,043 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,044 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,070 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,071 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,072 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,073 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,117 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,133 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,134 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,194 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,195 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,208 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,210 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,225 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,275 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,276 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,277 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,382 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,383 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,384 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,385 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,397 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,398 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,399 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,400 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,488 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,489 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,528 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,604 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,618 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,632 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,644 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,717 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,729 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,741 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,856 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,880 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:00,891 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:01,118 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:01,120 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:01,171 INFO L134 CoverageAnalysis]: Checked inductivity of 927 backedges. 73 proven. 211 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2021-05-02 15:04:01,172 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 15:04:01,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039171116] [2021-05-02 15:04:01,172 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 15:04:01,172 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130909569] [2021-05-02 15:04:01,172 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130909569] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 15:04:01,172 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 15:04:01,172 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2021-05-02 15:04:01,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953804717] [2021-05-02 15:04:01,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-05-02 15:04:01,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 15:04:01,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-05-02 15:04:01,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2021-05-02 15:04:01,173 INFO L87 Difference]: Start difference. First operand 474 states and 621 transitions. Second operand has 21 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2021-05-02 15:04:03,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 15:04:03,341 INFO L93 Difference]: Finished difference Result 556 states and 735 transitions. [2021-05-02 15:04:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-05-02 15:04:03,342 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) Word has length 160 [2021-05-02 15:04:03,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 15:04:03,344 INFO L225 Difference]: With dead ends: 556 [2021-05-02 15:04:03,344 INFO L226 Difference]: Without dead ends: 494 [2021-05-02 15:04:03,346 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1277.3ms TimeCoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2021-05-02 15:04:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-05-02 15:04:03,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 492. [2021-05-02 15:04:03,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 271 states have (on average 1.118081180811808) internal successors, (303), 273 states have internal predecessors, (303), 171 states have call successors, (171), 50 states have call predecessors, (171), 49 states have return successors, (169), 168 states have call predecessors, (169), 169 states have call successors, (169) [2021-05-02 15:04:03,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 643 transitions. [2021-05-02 15:04:03,420 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 643 transitions. Word has length 160 [2021-05-02 15:04:03,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 15:04:03,420 INFO L480 AbstractCegarLoop]: Abstraction has 492 states and 643 transitions. [2021-05-02 15:04:03,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 21 states, 19 states have (on average 2.0) internal successors, (38), 17 states have internal predecessors, (38), 11 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 10 states have call predecessors, (27), 10 states have call successors, (27) [2021-05-02 15:04:03,420 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 643 transitions. [2021-05-02 15:04:03,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-05-02 15:04:03,421 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 15:04:03,421 INFO L523 BasicCegarLoop]: trace histogram [21, 20, 20, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 15:04:03,624 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:04:03,625 INFO L428 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 15:04:03,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 15:04:03,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1560660366, now seen corresponding path program 8 times [2021-05-02 15:04:03,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 15:04:03,626 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355887038] [2021-05-02 15:04:03,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 15:04:03,631 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 15:04:03,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765416167] [2021-05-02 15:04:03,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 15:04:03,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 15:04:03,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 15:04:03,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 89 conjunts are in the unsatisfiable core [2021-05-02 15:04:03,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 15:04:03,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,797 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,842 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,844 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,884 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,886 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,952 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,967 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:03,968 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,082 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,100 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,102 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,204 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,205 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,206 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,223 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,224 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,226 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,243 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,247 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,264 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,265 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,527 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,529 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,531 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,532 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,551 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,553 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,555 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,557 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,788 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,789 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:04,792 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:05,128 WARN L205 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-05-02 15:04:05,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:05,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:07,159 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:07,160 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:07,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:07,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:07,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:07,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:07,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:09,464 WARN L205 SmtUtils]: Spent 2.19 s on a formula simplification that was a NOOP. DAG size: 34 [2021-05-02 15:04:09,472 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:09,476 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:10,461 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:10,464 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:10,484 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:10,487 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:10,507 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:10,510 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:13,568 WARN L205 SmtUtils]: Spent 2.97 s on a formula simplification that was a NOOP. DAG size: 36 [2021-05-02 15:04:13,577 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:13,580 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:13,601 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:13,605 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:13,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:13,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:15,718 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:15,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:15,721 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:15,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:15,722 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:15,723 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:15,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:17,743 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:17,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:17,745 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:17,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:17,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:17,750 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:17,752 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:17,754 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:19,784 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~c~0_BEFORE_CALL_257 Int) (v_main_~s~0_BEFORE_CALL_321 Int) (v_main_~b~0_BEFORE_CALL_355 Int) (v_main_~p~0_BEFORE_CALL_269 Int)) (let ((.cse0 (+ v_main_~c~0_BEFORE_CALL_257 (* 3 v_main_~b~0_BEFORE_CALL_355)))) (and (< 0 (+ v_main_~c~0_BEFORE_CALL_257 v_main_~b~0_BEFORE_CALL_355)) (<= 1 .cse0) (= (+ (* 3 (* v_main_~b~0_BEFORE_CALL_355 v_main_~p~0_BEFORE_CALL_269)) (* v_main_~c~0_BEFORE_CALL_257 v_main_~p~0_BEFORE_CALL_269)) 0) (<= .cse0 5) (= (+ (* 2 (* v_main_~b~0_BEFORE_CALL_355 v_main_~s~0_BEFORE_CALL_321)) (* v_main_~c~0_BEFORE_CALL_257 v_main_~s~0_BEFORE_CALL_321 v_main_~p~0_BEFORE_CALL_269) (* 3 (* v_main_~b~0_BEFORE_CALL_355 v_main_~s~0_BEFORE_CALL_321 v_main_~p~0_BEFORE_CALL_269)) v_main_~c~0_BEFORE_CALL_257 (* 2 v_main_~b~0_BEFORE_CALL_355) (* v_main_~c~0_BEFORE_CALL_257 v_main_~s~0_BEFORE_CALL_321)) 0)))) is different from false [2021-05-02 15:04:19,799 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:19,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,106 WARN L205 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2021-05-02 15:04:24,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,148 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,158 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,163 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,167 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,185 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,190 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,192 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,212 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,217 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,220 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,222 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,230 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:04:24,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,632 WARN L205 SmtUtils]: Spent 19.28 s on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2021-05-02 15:05:01,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,645 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,654 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,657 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,665 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,668 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,671 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,679 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,687 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,694 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,705 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,716 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,720 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:01,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,074 WARN L205 SmtUtils]: Spent 11.28 s on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2021-05-02 15:05:31,084 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,088 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,101 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,105 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,119 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,122 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,132 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,135 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,140 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,142 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,145 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,149 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,154 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,157 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,161 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,168 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,172 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,184 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,187 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,191 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,196 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,200 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,203 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,228 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,231 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,234 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,245 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,791 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,796 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,798 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,803 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,809 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,811 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,815 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,816 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,820 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,822 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,823 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,825 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,828 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,831 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,835 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,837 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,839 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,843 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,846 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,848 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,850 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,853 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,855 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,857 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,860 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,862 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,863 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,865 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,868 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,878 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,879 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,882 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,885 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,889 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,896 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,900 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,906 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,913 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,918 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,922 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,929 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,932 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,935 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,941 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,950 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,959 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,961 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,963 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,966 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,984 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,988 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:31,992 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,001 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,003 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,005 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,007 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,011 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,017 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,023 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,027 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,032 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,035 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,045 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,576 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,578 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,579 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,582 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,591 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,594 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,597 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,599 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,614 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,616 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,619 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,744 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,746 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,749 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,971 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,973 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:32,976 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,016 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,018 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,022 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:33,025 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:37,628 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:37,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:37,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:37,806 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:37,912 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:05:39,213 WARN L205 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 4254 DAG size of output: 4244 [2021-05-02 15:05:39,777 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:08,598 WARN L205 SmtUtils]: Spent 4.46 m on a formula simplification. DAG size of input: 55128 DAG size of output: 52500 [2021-05-02 15:10:19,351 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 15:10:35,463 WARN L205 SmtUtils]: Spent 16.08 s on a formula simplification. DAG size of input: 14562 DAG size of output: 13564