/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 10:53:42,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 10:53:42,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 10:53:42,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-06 10:53:42,893 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 10:53:42,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 10:53:42,895 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 10:53:42,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 10:53:42,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 10:53:42,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 10:53:42,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 10:53:42,898 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 10:53:42,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 10:53:42,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 10:53:42,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 10:53:42,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 10:53:42,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 10:53:42,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 10:53:42,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 10:53:42,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 10:53:42,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 10:53:42,923 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 10:53:42,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 10:53:42,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 10:53:42,925 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 10:53:42,925 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 10:53:42,925 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 10:53:42,925 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 10:53:42,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 10:53:42,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 10:53:42,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 10:53:42,925 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 10:53:42,926 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 10:53:42,926 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 10:53:42,926 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 10:53:42,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 10:53:42,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 10:53:42,926 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 10:53:42,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 10:53:42,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 10:53:42,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 10:53:42,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 10:53:42,927 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 10:53:42,927 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 10:53:43,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 10:53:43,167 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 10:53:43,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 10:53:43,169 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 10:53:43,170 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 10:53:43,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2021-05-06 10:53:43,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb66a8c7/101f6d3007bf47b9bf951cccac6f8ce3/FLAGf859e3f3a [2021-05-06 10:53:43,584 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 10:53:43,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/sqrt1-ll_valuebound1.c [2021-05-06 10:53:43,590 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb66a8c7/101f6d3007bf47b9bf951cccac6f8ce3/FLAGf859e3f3a [2021-05-06 10:53:44,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdb66a8c7/101f6d3007bf47b9bf951cccac6f8ce3 [2021-05-06 10:53:44,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 10:53:44,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 10:53:44,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 10:53:44,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 10:53:44,017 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 10:53:44,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,019 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7274d89f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44, skipping insertion in model container [2021-05-06 10:53:44,019 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 10:53:44,035 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 10:53:44,135 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/sqrt1-ll_valuebound1.c[520,533] [2021-05-06 10:53:44,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 10:53:44,150 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 10:53:44,184 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/sqrt1-ll_valuebound1.c[520,533] [2021-05-06 10:53:44,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 10:53:44,203 INFO L208 MainTranslator]: Completed translation [2021-05-06 10:53:44,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44 WrapperNode [2021-05-06 10:53:44,204 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 10:53:44,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 10:53:44,205 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 10:53:44,205 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 10:53:44,212 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,239 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 10:53:44,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 10:53:44,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 10:53:44,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 10:53:44,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (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 [2021-05-06 10:53:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 10:53:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 10:53:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 10:53:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 10:53:44,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 10:53:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 10:53:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 10:53:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 10:53:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 10:53:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 10:53:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 10:53:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 10:53:44,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 10:53:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 10:53:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 10:53:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 10:53:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 10:53:44,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 10:53:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 10:53:44,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 10:53:44,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 10:53:44,489 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 10:53:44,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:53:44 BoogieIcfgContainer [2021-05-06 10:53:44,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 10:53:44,496 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 10:53:44,496 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 10:53:44,497 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 10:53:44,499 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:53:44" (1/1) ... [2021-05-06 10:53:44,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 10:53:44 BasicIcfg [2021-05-06 10:53:44,526 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 10:53:44,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 10:53:44,527 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 10:53:44,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 10:53:44,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 10:53:44" (1/4) ... [2021-05-06 10:53:44,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180cd4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 10:53:44, skipping insertion in model container [2021-05-06 10:53:44,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 10:53:44" (2/4) ... [2021-05-06 10:53:44,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180cd4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 10:53:44, skipping insertion in model container [2021-05-06 10:53:44,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 10:53:44" (3/4) ... [2021-05-06 10:53:44,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180cd4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 10:53:44, skipping insertion in model container [2021-05-06 10:53:44,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 10:53:44" (4/4) ... [2021-05-06 10:53:44,531 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound1.cJordan [2021-05-06 10:53:44,534 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 10:53:44,537 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 10:53:44,547 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 10:53:44,565 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 10:53:44,565 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 10:53:44,565 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 10:53:44,565 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 10:53:44,565 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 10:53:44,565 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 10:53:44,565 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 10:53:44,565 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 10:53:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-05-06 10:53:44,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 10:53:44,590 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:44,590 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:44,591 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:44,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:44,594 INFO L82 PathProgramCache]: Analyzing trace with hash -179702132, now seen corresponding path program 1 times [2021-05-06 10:53:44,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:44,600 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716726809] [2021-05-06 10:53:44,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:44,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 10:53:44,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:44,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 10:53:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:44,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:53:44,755 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:44,755 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716726809] [2021-05-06 10:53:44,756 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716726809] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:53:44,756 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:53:44,756 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-06 10:53:44,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341031346] [2021-05-06 10:53:44,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-06 10:53:44,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:44,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-06 10:53:44,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 10:53:44,769 INFO L87 Difference]: Start difference. First operand has 31 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 10:53:44,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:44,851 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-05-06 10:53:44,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-06 10:53:44,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 10:53:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:44,860 INFO L225 Difference]: With dead ends: 31 [2021-05-06 10:53:44,861 INFO L226 Difference]: Without dead ends: 26 [2021-05-06 10:53:44,862 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-06 10:53:44,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-06 10:53:44,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-06 10:53:44,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-05-06 10:53:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-05-06 10:53:44,890 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2021-05-06 10:53:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:44,891 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-05-06 10:53:44,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 10:53:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-05-06 10:53:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 10:53:44,891 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:44,892 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:44,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 10:53:44,892 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:44,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:44,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1985279762, now seen corresponding path program 1 times [2021-05-06 10:53:44,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:44,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419143477] [2021-05-06 10:53:44,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:44,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:45,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 10:53:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-05-06 10:53:45,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:45,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:53:45,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:45,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419143477] [2021-05-06 10:53:45,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419143477] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:53:45,070 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:53:45,070 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 10:53:45,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035647068] [2021-05-06 10:53:45,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:53:45,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:53:45,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:45,075 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 10:53:45,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:45,365 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-05-06 10:53:45,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 10:53:45,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2021-05-06 10:53:45,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:45,366 INFO L225 Difference]: With dead ends: 38 [2021-05-06 10:53:45,366 INFO L226 Difference]: Without dead ends: 38 [2021-05-06 10:53:45,367 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 191.2ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-05-06 10:53:45,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-05-06 10:53:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-05-06 10:53:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-05-06 10:53:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 45 transitions. [2021-05-06 10:53:45,373 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 45 transitions. Word has length 17 [2021-05-06 10:53:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:45,373 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 45 transitions. [2021-05-06 10:53:45,373 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-05-06 10:53:45,373 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 45 transitions. [2021-05-06 10:53:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-05-06 10:53:45,374 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:45,374 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:45,374 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-06 10:53:45,374 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:45,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:45,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1146988413, now seen corresponding path program 1 times [2021-05-06 10:53:45,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:45,375 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607384769] [2021-05-06 10:53:45,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:45,388 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:45,388 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895937760] [2021-05-06 10:53:45,388 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 [2021-05-06 10:53:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:45,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 10:53:45,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:45,541 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:45,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 10:53:45,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:45,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607384769] [2021-05-06 10:53:45,569 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:45,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895937760] [2021-05-06 10:53:45,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895937760] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:53:45,569 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:53:45,569 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 10:53:45,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876933062] [2021-05-06 10:53:45,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 10:53:45,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:45,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 10:53:45,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 10:53:45,571 INFO L87 Difference]: Start difference. First operand 36 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 10:53:45,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:45,604 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2021-05-06 10:53:45,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 10:53:45,604 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-05-06 10:53:45,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:45,606 INFO L225 Difference]: With dead ends: 42 [2021-05-06 10:53:45,606 INFO L226 Difference]: Without dead ends: 42 [2021-05-06 10:53:45,606 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.3ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-05-06 10:53:45,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2021-05-06 10:53:45,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 23 states have internal predecessors, (24), 14 states have call successors, (14), 6 states have call predecessors, (14), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2021-05-06 10:53:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2021-05-06 10:53:45,618 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2021-05-06 10:53:45,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:45,618 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2021-05-06 10:53:45,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-05-06 10:53:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2021-05-06 10:53:45,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-05-06 10:53:45,619 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:45,619 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:45,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-06 10:53:45,833 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:45,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:45,833 INFO L82 PathProgramCache]: Analyzing trace with hash -88951989, now seen corresponding path program 1 times [2021-05-06 10:53:45,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:45,834 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105340814] [2021-05-06 10:53:45,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:45,840 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:45,840 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307378241] [2021-05-06 10:53:45,841 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 [2021-05-06 10:53:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:45,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 7 conjunts are in the unsatisfiable core [2021-05-06 10:53:45,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:45,995 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:46,002 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-05-06 10:53:46,003 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:46,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105340814] [2021-05-06 10:53:46,003 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:46,003 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307378241] [2021-05-06 10:53:46,003 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307378241] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 10:53:46,003 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 10:53:46,003 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 10:53:46,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517646869] [2021-05-06 10:53:46,004 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 10:53:46,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:46,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 10:53:46,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 10:53:46,004 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 10:53:46,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:46,053 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2021-05-06 10:53:46,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 10:53:46,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 27 [2021-05-06 10:53:46,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:46,054 INFO L225 Difference]: With dead ends: 46 [2021-05-06 10:53:46,054 INFO L226 Difference]: Without dead ends: 43 [2021-05-06 10:53:46,055 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:46,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-05-06 10:53:46,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-05-06 10:53:46,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 25 states have internal predecessors, (26), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-05-06 10:53:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-05-06 10:53:46,058 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 27 [2021-05-06 10:53:46,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:46,058 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-05-06 10:53:46,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-05-06 10:53:46,058 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-05-06 10:53:46,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-05-06 10:53:46,059 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:46,059 INFO L523 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:46,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:46,260 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:46,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:46,260 INFO L82 PathProgramCache]: Analyzing trace with hash 196845204, now seen corresponding path program 1 times [2021-05-06 10:53:46,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:46,260 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862675194] [2021-05-06 10:53:46,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:46,267 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:46,268 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1172143108] [2021-05-06 10:53:46,268 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 [2021-05-06 10:53:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 10:53:46,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-06 10:53:46,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:46,416 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-05-06 10:53:46,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:46,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862675194] [2021-05-06 10:53:46,425 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:46,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1172143108] [2021-05-06 10:53:46,425 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1172143108] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:53:46,425 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:53:46,425 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:53:46,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580840163] [2021-05-06 10:53:46,426 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:53:46,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:46,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:53:46,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:46,426 INFO L87 Difference]: Start difference. First operand 43 states and 48 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 10:53:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:46,488 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2021-05-06 10:53:46,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:53:46,489 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 34 [2021-05-06 10:53:46,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:46,490 INFO L225 Difference]: With dead ends: 55 [2021-05-06 10:53:46,490 INFO L226 Difference]: Without dead ends: 55 [2021-05-06 10:53:46,492 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.1ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:53:46,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-05-06 10:53:46,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-05-06 10:53:46,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 29 states have (on average 1.103448275862069) internal successors, (32), 31 states have internal predecessors, (32), 16 states have call successors, (16), 8 states have call predecessors, (16), 7 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2021-05-06 10:53:46,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2021-05-06 10:53:46,507 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 34 [2021-05-06 10:53:46,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:46,508 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2021-05-06 10:53:46,509 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, (7), 2 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-05-06 10:53:46,509 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2021-05-06 10:53:46,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-05-06 10:53:46,509 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:46,509 INFO L523 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:46,710 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:46,710 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:46,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:46,711 INFO L82 PathProgramCache]: Analyzing trace with hash -374953577, now seen corresponding path program 2 times [2021-05-06 10:53:46,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:46,711 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230889000] [2021-05-06 10:53:46,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:46,717 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:46,718 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1611407000] [2021-05-06 10:53:46,718 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 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 [2021-05-06 10:53:46,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 10:53:46,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:53:46,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 10:53:46,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:46,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-05-06 10:53:46,866 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:46,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230889000] [2021-05-06 10:53:46,866 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:46,866 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611407000] [2021-05-06 10:53:46,866 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611407000] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:53:46,866 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:53:46,866 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:53:46,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939079020] [2021-05-06 10:53:46,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:53:46,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:46,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:53:46,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:46,867 INFO L87 Difference]: Start difference. First operand 53 states and 62 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-06 10:53:46,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:46,939 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-05-06 10:53:46,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:53:46,940 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 39 [2021-05-06 10:53:46,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:46,941 INFO L225 Difference]: With dead ends: 59 [2021-05-06 10:53:46,941 INFO L226 Difference]: Without dead ends: 59 [2021-05-06 10:53:46,941 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 24.8ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:53:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-05-06 10:53:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 58. [2021-05-06 10:53:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 32 states have (on average 1.09375) internal successors, (35), 34 states have internal predecessors, (35), 17 states have call successors, (17), 9 states have call predecessors, (17), 8 states have return successors, (15), 14 states have call predecessors, (15), 15 states have call successors, (15) [2021-05-06 10:53:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 67 transitions. [2021-05-06 10:53:46,945 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 67 transitions. Word has length 39 [2021-05-06 10:53:46,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:46,945 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 67 transitions. [2021-05-06 10:53:46,945 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, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-05-06 10:53:46,945 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 67 transitions. [2021-05-06 10:53:46,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-05-06 10:53:46,946 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:46,946 INFO L523 BasicCegarLoop]: trace histogram [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] [2021-05-06 10:53:47,165 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:47,165 INFO L428 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:47,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:47,165 INFO L82 PathProgramCache]: Analyzing trace with hash -786894479, now seen corresponding path program 3 times [2021-05-06 10:53:47,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:47,166 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235979166] [2021-05-06 10:53:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:47,178 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:47,178 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1809923631] [2021-05-06 10:53:47,178 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 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 [2021-05-06 10:53:47,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-06 10:53:47,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:53:47,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2021-05-06 10:53:47,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:47,298 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,306 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-05-06 10:53:47,306 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:47,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235979166] [2021-05-06 10:53:47,306 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:47,306 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809923631] [2021-05-06 10:53:47,306 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809923631] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:53:47,306 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:53:47,306 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2021-05-06 10:53:47,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250437739] [2021-05-06 10:53:47,307 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 10:53:47,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:47,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 10:53:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 10:53:47,307 INFO L87 Difference]: Start difference. First operand 58 states and 67 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), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-06 10:53:47,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:47,364 INFO L93 Difference]: Finished difference Result 63 states and 71 transitions. [2021-05-06 10:53:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-06 10:53:47,364 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), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 44 [2021-05-06 10:53:47,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:47,365 INFO L225 Difference]: With dead ends: 63 [2021-05-06 10:53:47,365 INFO L226 Difference]: Without dead ends: 60 [2021-05-06 10:53:47,365 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.9ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:53:47,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-05-06 10:53:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-05-06 10:53:47,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 15 states have call successors, (15), 10 states have call predecessors, (15), 9 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2021-05-06 10:53:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 65 transitions. [2021-05-06 10:53:47,368 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 65 transitions. Word has length 44 [2021-05-06 10:53:47,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:47,368 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 65 transitions. [2021-05-06 10:53:47,369 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), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-05-06 10:53:47,369 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 65 transitions. [2021-05-06 10:53:47,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-05-06 10:53:47,369 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 10:53:47,369 INFO L523 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 10:53:47,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-05-06 10:53:47,577 INFO L428 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 10:53:47,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 10:53:47,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1256212910, now seen corresponding path program 4 times [2021-05-06 10:53:47,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 10:53:47,578 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680349298] [2021-05-06 10:53:47,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 10:53:47,584 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-06 10:53:47,584 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804582749] [2021-05-06 10:53:47,585 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 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 [2021-05-06 10:53:47,648 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-05-06 10:53:47,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 10:53:47,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-06 10:53:47,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 10:53:47,697 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,698 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,699 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,700 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,701 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,702 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,711 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,712 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,713 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,714 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,715 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,724 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,725 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,726 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,727 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,728 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,740 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,742 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,748 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,765 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,766 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,769 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,770 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,779 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,780 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,784 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,794 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,800 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,802 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,810 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,818 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,819 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 10:53:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-05-06 10:53:47,827 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 10:53:47,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680349298] [2021-05-06 10:53:47,827 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-06 10:53:47,827 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804582749] [2021-05-06 10:53:47,827 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804582749] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 10:53:47,827 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-06 10:53:47,827 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2021-05-06 10:53:47,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736111735] [2021-05-06 10:53:47,827 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-06 10:53:47,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 10:53:47,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-06 10:53:47,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-05-06 10:53:47,828 INFO L87 Difference]: Start difference. First operand 60 states and 65 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-06 10:53:47,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 10:53:47,869 INFO L93 Difference]: Finished difference Result 46 states and 45 transitions. [2021-05-06 10:53:47,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 10:53:47,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 51 [2021-05-06 10:53:47,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 10:53:47,870 INFO L225 Difference]: With dead ends: 46 [2021-05-06 10:53:47,870 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 10:53:47,870 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-05-06 10:53:47,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 10:53:47,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 10:53:47,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 10:53:47,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 10:53:47,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2021-05-06 10:53:47,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 10:53:47,871 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 10:53:47,871 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2021-05-06 10:53:47,871 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 10:53:47,871 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 10:53:48,071 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 10:53:48,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 10:53:48 BasicIcfg [2021-05-06 10:53:48,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 10:53:48,075 INFO L168 Benchmark]: Toolchain (without parser) took 4062.58 ms. Allocated memory was 183.5 MB in the beginning and 226.5 MB in the end (delta: 43.0 MB). Free memory was 148.4 MB in the beginning and 168.2 MB in the end (delta: -19.8 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:48,075 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 183.5 MB. Free memory is still 165.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 10:53:48,076 INFO L168 Benchmark]: CACSL2BoogieTranslator took 189.22 ms. Allocated memory is still 183.5 MB. Free memory was 148.2 MB in the beginning and 166.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:48,076 INFO L168 Benchmark]: Boogie Preprocessor took 34.90 ms. Allocated memory is still 183.5 MB. Free memory was 166.4 MB in the beginning and 164.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:48,076 INFO L168 Benchmark]: RCFGBuilder took 254.97 ms. Allocated memory is still 183.5 MB. Free memory was 164.6 MB in the beginning and 149.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:48,076 INFO L168 Benchmark]: IcfgTransformer took 29.53 ms. Allocated memory is still 183.5 MB. Free memory was 149.9 MB in the beginning and 148.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:48,076 INFO L168 Benchmark]: TraceAbstraction took 3548.26 ms. Allocated memory was 183.5 MB in the beginning and 226.5 MB in the end (delta: 43.0 MB). Free memory was 148.6 MB in the beginning and 168.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. [2021-05-06 10:53:48,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 183.5 MB. Free memory is still 165.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 189.22 ms. Allocated memory is still 183.5 MB. Free memory was 148.2 MB in the beginning and 166.4 MB in the end (delta: -18.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.90 ms. Allocated memory is still 183.5 MB. Free memory was 166.4 MB in the beginning and 164.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 254.97 ms. Allocated memory is still 183.5 MB. Free memory was 164.6 MB in the beginning and 149.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 29.53 ms. Allocated memory is still 183.5 MB. Free memory was 149.9 MB in the beginning and 148.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3548.26 ms. Allocated memory was 183.5 MB in the beginning and 226.5 MB in the end (delta: 43.0 MB). Free memory was 148.6 MB in the beginning and 168.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3508.8ms, OverallIterations: 8, TraceHistogramMax: 7, EmptinessCheckTime: 22.2ms, AutomataDifference: 722.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 249 SDtfs, 74 SDslu, 636 SDs, 0 SdLazy, 330 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 326.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 418.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=7, InterpolantAutomatonStates: 45, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 60.5ms AutomataMinimizationTime, 8 MinimizatonAttempts, 6 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 48.1ms SsaConstructionTime, 159.1ms SatisfiabilityAnalysisTime, 948.6ms InterpolantComputationTime, 251 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 243 ConstructedInterpolants, 0 QuantifiedInterpolants, 696 SizeOfPredicates, 10 NumberOfNonLiveVariables, 781 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 186/200 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...