/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:26:05,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:26:05,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:26:05,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:26:05,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:26:05,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:26:05,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:26:05,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:26:05,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:26:05,540 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:26:05,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:26:05,549 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:26:05,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:26:05,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:26:05,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:26:05,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:26:05,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:26:05,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:26:05,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:26:05,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:26:05,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:26:05,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:26:05,594 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:26:05,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:26:05,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:26:05,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:26:05,618 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:26:05,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:26:05,620 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 [2021-02-21 16:26:05,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:26:05,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:26:05,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:26:05,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:26:05,678 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:26:05,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:26:05,679 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:26:05,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:26:05,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:26:05,680 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:26:05,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:26:05,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:26:05,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:26:05,681 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:26:05,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:26:05,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:26:05,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:26:05,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:26:05,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:26:05,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:26:05,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:26:05,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:26:05,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:26:05,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:26:05,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:26:05,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:26:05,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:26:05,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:26:05,685 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:26:06,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:26:06,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:26:06,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:26:06,131 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:26:06,132 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:26:06,133 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-2.i [2021-02-21 16:26:06,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c59ce5f09/1863126a30b64275aa99b559e4272d34/FLAGa74bf7a59 [2021-02-21 16:26:06,826 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:26:06,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i [2021-02-21 16:26:06,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c59ce5f09/1863126a30b64275aa99b559e4272d34/FLAGa74bf7a59 [2021-02-21 16:26:07,155 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c59ce5f09/1863126a30b64275aa99b559e4272d34 [2021-02-21 16:26:07,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:26:07,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:26:07,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:07,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:26:07,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:26:07,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cc384e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07, skipping insertion in model container [2021-02-21 16:26:07,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,196 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:26:07,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:26:07,399 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i[849,862] [2021-02-21 16:26:07,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:07,423 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:26:07,439 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-2.i[849,862] [2021-02-21 16:26:07,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:07,461 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:26:07,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07 WrapperNode [2021-02-21 16:26:07,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:07,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:26:07,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:26:07,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:26:07,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,498 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (1/1) ... [2021-02-21 16:26:07,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:26:07,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:26:07,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:26:07,503 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:26:07,504 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (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 [2021-02-21 16:26:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:26:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:26:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:26:07,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:26:07,654 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:26:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:26:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:26:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:26:07,654 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:26:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:26:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:26:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:26:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:26:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:26:07,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:26:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:26:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:26:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:26:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:26:07,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:26:08,020 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:26:08,021 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 16:26:08,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:08 BoogieIcfgContainer [2021-02-21 16:26:08,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:26:08,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:26:08,032 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:26:08,042 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:26:08,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:26:07" (1/3) ... [2021-02-21 16:26:08,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b40fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:08, skipping insertion in model container [2021-02-21 16:26:08,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:07" (2/3) ... [2021-02-21 16:26:08,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b40fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:08, skipping insertion in model container [2021-02-21 16:26:08,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:08" (3/3) ... [2021-02-21 16:26:08,048 INFO L111 eAbstractionObserver]: Analyzing ICFG sum01-2.i [2021-02-21 16:26:08,065 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:26:08,076 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:26:08,119 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:26:08,177 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:26:08,178 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:26:08,178 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:26:08,178 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:26:08,178 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:26:08,178 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:26:08,179 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:26:08,179 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:26:08,212 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2021-02-21 16:26:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-02-21 16:26:08,219 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:08,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:08,220 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:08,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:08,230 INFO L82 PathProgramCache]: Analyzing trace with hash -241432906, now seen corresponding path program 1 times [2021-02-21 16:26:08,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:08,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743789087] [2021-02-21 16:26:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:08,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:08,555 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:08,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:08,567 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:26:08,600 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:08,602 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:08,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:08,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:08,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:08,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:08,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:08,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:08,774 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:08,775 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:08,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743789087] [2021-02-21 16:26:08,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:26:08,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:26:08,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627455940] [2021-02-21 16:26:08,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:26:08,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:08,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:26:08,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:26:08,817 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 6 states. [2021-02-21 16:26:09,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:09,289 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2021-02-21 16:26:09,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 16:26:09,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2021-02-21 16:26:09,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:09,299 INFO L225 Difference]: With dead ends: 39 [2021-02-21 16:26:09,299 INFO L226 Difference]: Without dead ends: 15 [2021-02-21 16:26:09,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-21 16:26:09,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-21 16:26:09,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-21 16:26:09,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-21 16:26:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-02-21 16:26:09,346 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 12 [2021-02-21 16:26:09,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:09,346 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-02-21 16:26:09,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:26:09,347 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-02-21 16:26:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:26:09,347 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:09,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:09,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:26:09,348 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:09,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:09,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1042759188, now seen corresponding path program 1 times [2021-02-21 16:26:09,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:09,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790271150] [2021-02-21 16:26:09,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:09,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:09,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:09,421 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 16:26:09,422 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 16:26:09,450 WARN L141 QuantifierPusher]: treesize reduction 10, result has 76.2 percent of original size [2021-02-21 16:26:09,452 WARN L147 QuantifierPusher]: treesize reduction 10, result has 76.2 percent of original size 32 [2021-02-21 16:26:09,526 WARN L141 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size [2021-02-21 16:26:09,532 WARN L147 QuantifierPusher]: treesize reduction 14, result has 60.0 percent of original size 21 [2021-02-21 16:26:09,566 WARN L141 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size [2021-02-21 16:26:09,567 WARN L147 QuantifierPusher]: treesize reduction 15, result has 46.4 percent of original size 13 [2021-02-21 16:26:09,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:09,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:09,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:09,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:09,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790271150] [2021-02-21 16:26:09,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781345849] [2021-02-21 16:26:09,705 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 [2021-02-21 16:26:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:09,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-02-21 16:26:09,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:26:09,813 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,814 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,815 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,816 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,817 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,817 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,822 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,823 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,824 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,824 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,825 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,826 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,827 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,829 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,830 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,842 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,844 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:09,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:09,849 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:09,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:09,852 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,853 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:09,854 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,855 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:09,857 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:09,859 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,860 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:09,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:09,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:26:09,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:09,883 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,884 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:09,885 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,886 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:09,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:26:09,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:09,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:09,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:09,969 WARN L141 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size [2021-02-21 16:26:09,970 WARN L147 QuantifierPusher]: treesize reduction 1, result has 92.9 percent of original size 13 [2021-02-21 16:26:09,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,980 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:09,981 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,983 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:09,984 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 16:26:09,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:09,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:26:09,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,000 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:10,036 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,041 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:10,042 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,043 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:26:10,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-21 16:26:10,046 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,048 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:10,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:26:10,052 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 16:26:10,054 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,060 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-21 16:26:10,068 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:10,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 16:26:10,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:26:10,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:10,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,127 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:10,129 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 16:26:10,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:10,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:10,158 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-21 16:26:10,159 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-21 16:26:10,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,161 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:10,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:10,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:10,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:10,165 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:10,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 16:26:10,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 15 [2021-02-21 16:26:10,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407691599] [2021-02-21 16:26:10,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-02-21 16:26:10,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:10,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-02-21 16:26:10,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2021-02-21 16:26:10,169 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 15 states. [2021-02-21 16:26:10,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:10,665 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-02-21 16:26:10,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 16:26:10,666 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 14 [2021-02-21 16:26:10,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:10,668 INFO L225 Difference]: With dead ends: 22 [2021-02-21 16:26:10,668 INFO L226 Difference]: Without dead ends: 17 [2021-02-21 16:26:10,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2021-02-21 16:26:10,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-02-21 16:26:10,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-02-21 16:26:10,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-02-21 16:26:10,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-02-21 16:26:10,676 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2021-02-21 16:26:10,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:10,677 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-02-21 16:26:10,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2021-02-21 16:26:10,677 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-02-21 16:26:10,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-21 16:26:10,678 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:10,678 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:10,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-21 16:26:10,893 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:10,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:10,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1799219726, now seen corresponding path program 2 times [2021-02-21 16:26:10,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:10,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696150424] [2021-02-21 16:26:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:11,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,005 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,006 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:11,026 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 16:26:11,027 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 16:26:11,035 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-21 16:26:11,036 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-21 16:26:11,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,048 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:26:11,062 WARN L141 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-02-21 16:26:11,063 WARN L147 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size 19 [2021-02-21 16:26:11,081 WARN L141 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-02-21 16:26:11,082 WARN L147 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size 21 [2021-02-21 16:26:11,102 WARN L141 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size [2021-02-21 16:26:11,103 WARN L147 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size 13 [2021-02-21 16:26:11,116 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,117 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:11,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:11,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,140 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:11,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:11,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:11,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696150424] [2021-02-21 16:26:11,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772457770] [2021-02-21 16:26:11,181 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 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 [2021-02-21 16:26:11,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-02-21 16:26:11,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-21 16:26:11,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 19 conjunts are in the unsatisfiable core [2021-02-21 16:26:11,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:26:11,243 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,245 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,247 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,252 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,253 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,254 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,255 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,259 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,264 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:11,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:11,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:11,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:11,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:11,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:11,274 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,275 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:11,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:11,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:11,279 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 16:26:11,280 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 16:26:11,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:11,282 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:11,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:26:11,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:11,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,294 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:11,295 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:11,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:26:11,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:11,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:11,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:11,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,348 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:26:11,349 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:11,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:11,352 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,353 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:11,376 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-02-21 16:26:11,377 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size 16 [2021-02-21 16:26:11,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,380 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:11,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,381 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:11,382 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:26:11,383 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,385 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 16:26:11,386 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,387 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:11,411 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,414 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:11,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 16:26:11,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:26:11,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,421 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:11,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 16:26:11,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:26:11,426 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-02-21 16:26:11,431 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:11,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,434 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-21 16:26:11,436 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:11,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 16:26:11,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:26:11,446 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-21 16:26:11,447 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,448 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:11,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-21 16:26:11,455 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size 34 [2021-02-21 16:26:11,455 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,456 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:11,472 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,473 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:11,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 16:26:11,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:11,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:11,493 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-21 16:26:11,493 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-21 16:26:11,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:11,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:11,497 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:11,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 16:26:11,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 18 [2021-02-21 16:26:11,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374069398] [2021-02-21 16:26:11,498 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-02-21 16:26:11,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:11,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-02-21 16:26:11,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-02-21 16:26:11,500 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 18 states. [2021-02-21 16:26:12,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:12,154 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-02-21 16:26:12,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-21 16:26:12,155 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 16 [2021-02-21 16:26:12,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:12,156 INFO L225 Difference]: With dead ends: 27 [2021-02-21 16:26:12,156 INFO L226 Difference]: Without dead ends: 21 [2021-02-21 16:26:12,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2021-02-21 16:26:12,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-02-21 16:26:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-02-21 16:26:12,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-02-21 16:26:12,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-02-21 16:26:12,163 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2021-02-21 16:26:12,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:12,164 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-02-21 16:26:12,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-02-21 16:26:12,164 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-02-21 16:26:12,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 16:26:12,165 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:12,165 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:12,380 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:26:12,381 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:12,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:12,382 INFO L82 PathProgramCache]: Analyzing trace with hash 194389806, now seen corresponding path program 3 times [2021-02-21 16:26:12,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:12,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824022568] [2021-02-21 16:26:12,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:12,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:12,440 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 16:26:12,441 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 16:26:12,448 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-21 16:26:12,449 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-21 16:26:12,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:26:12,471 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:26:12,482 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,483 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:26:12,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:26:12,486 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,486 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:26:12,489 WARN L141 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size [2021-02-21 16:26:12,489 WARN L147 QuantifierPusher]: treesize reduction 13, result has 59.4 percent of original size 19 [2021-02-21 16:26:12,506 WARN L141 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size [2021-02-21 16:26:12,507 WARN L147 QuantifierPusher]: treesize reduction 13, result has 61.8 percent of original size 21 [2021-02-21 16:26:12,524 WARN L141 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size [2021-02-21 16:26:12,525 WARN L147 QuantifierPusher]: treesize reduction 13, result has 50.0 percent of original size 13 [2021-02-21 16:26:12,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:12,549 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,549 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:12,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:12,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:12,597 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,597 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-02-21 16:26:12,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824022568] [2021-02-21 16:26:12,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403836776] [2021-02-21 16:26:12,600 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 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 [2021-02-21 16:26:12,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-02-21 16:26:12,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-02-21 16:26:12,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 27 conjunts are in the unsatisfiable core [2021-02-21 16:26:12,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:26:12,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,669 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,670 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,674 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,675 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,675 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,678 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,686 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,687 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,690 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,691 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,692 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,692 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,693 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,693 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,694 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,694 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,695 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,695 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,696 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,696 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:12,697 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,697 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:12,702 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,703 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:12,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:12,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:12,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,715 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:12,716 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,716 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:12,717 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,717 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:12,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,718 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:12,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:12,721 WARN L141 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size [2021-02-21 16:26:12,721 WARN L147 QuantifierPusher]: treesize reduction 2, result has 77.8 percent of original size 7 [2021-02-21 16:26:12,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:12,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:12,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:26:12,731 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-21 16:26:12,731 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-21 16:26:12,732 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,734 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,757 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:26:12,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,760 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,780 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:26:12,783 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-21 16:26:12,783 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-21 16:26:12,784 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,786 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,808 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:26:12,809 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,810 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,810 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,811 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:26:12,836 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-21 16:26:12,836 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-21 16:26:12,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,837 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:26:12,861 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:26:12,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:12,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:12,866 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:12,896 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:26:12,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:12,901 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,902 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:12,904 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:12,941 WARN L141 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size [2021-02-21 16:26:12,942 WARN L147 QuantifierPusher]: treesize reduction 1, result has 94.1 percent of original size 16 [2021-02-21 16:26:12,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,944 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:12,946 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,947 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:12,948 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:26:12,949 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,950 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-21 16:26:12,951 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,952 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:26:12,979 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,986 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:12,987 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 16:26:12,988 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:26:12,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,996 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:12,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:12,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 16:26:12,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:26:13,004 WARN L141 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size [2021-02-21 16:26:13,009 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:13,011 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,018 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-21 16:26:13,020 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,020 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:13,021 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-21 16:26:13,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:26:13,027 INFO L723 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2021-02-21 16:26:13,029 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,029 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:26:13,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-21 16:26:13,035 WARN L147 QuantifierPusher]: treesize reduction 8, result has 81.0 percent of original size 34 [2021-02-21 16:26:13,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:13,053 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:26:13,055 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,056 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 16:26:13,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:13,057 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:13,075 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-21 16:26:13,076 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-21 16:26:13,076 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:13,077 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,077 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:13,078 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:13,078 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:13,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 16:26:13,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 23 [2021-02-21 16:26:13,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22368844] [2021-02-21 16:26:13,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-02-21 16:26:13,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:13,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-02-21 16:26:13,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=442, Unknown=0, NotChecked=0, Total=506 [2021-02-21 16:26:13,082 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 23 states. [2021-02-21 16:26:14,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:14,072 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2021-02-21 16:26:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-02-21 16:26:14,073 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 20 [2021-02-21 16:26:14,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:14,074 INFO L225 Difference]: With dead ends: 24 [2021-02-21 16:26:14,074 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:26:14,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2021-02-21 16:26:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:26:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:26:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:26:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:26:14,078 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-02-21 16:26:14,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:14,078 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:26:14,078 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2021-02-21 16:26:14,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:26:14,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:26:14,292 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:26:14,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:26:14,552 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-21 16:26:14,552 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-21 16:26:14,552 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-21 16:26:14,552 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:26:14,553 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-21 16:26:14,553 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:26:14,553 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:26:14,553 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:26:14,553 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:26:14,553 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:26:14,554 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 22 29) the Hoare annotation is: true [2021-02-21 16:26:14,554 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 22 29) no Hoare annotation was computed. [2021-02-21 16:26:14,554 INFO L189 CegarLoopUtils]: For program point L24(line 24) no Hoare annotation was computed. [2021-02-21 16:26:14,554 INFO L189 CegarLoopUtils]: For program point L25-2(lines 25 27) no Hoare annotation was computed. [2021-02-21 16:26:14,554 INFO L185 CegarLoopUtils]: At program point L25-3(lines 25 27) the Hoare annotation is: (or (let ((.cse1 (+ main_~sn~0 2)) (.cse0 (* 2 main_~i~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (< main_~sn~0 (+ (* 2 main_~n~0) 1)))) (and (= main_~sn~0 0) (= main_~i~0 1))) [2021-02-21 16:26:14,554 INFO L185 CegarLoopUtils]: At program point L25-4(lines 25 27) the Hoare annotation is: (or (= main_~sn~0 0) (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~sn~0) (< main_~sn~0 (+ .cse0 1))))) [2021-02-21 16:26:14,555 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 22 29) no Hoare annotation was computed. [2021-02-21 16:26:14,555 INFO L189 CegarLoopUtils]: For program point L17(line 17) no Hoare annotation was computed. [2021-02-21 16:26:14,555 INFO L189 CegarLoopUtils]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-02-21 16:26:14,555 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2021-02-21 16:26:14,555 INFO L189 CegarLoopUtils]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2021-02-21 16:26:14,555 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2021-02-21 16:26:14,555 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-02-21 16:26:14,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:26:14 BoogieIcfgContainer [2021-02-21 16:26:14,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:26:14,574 INFO L168 Benchmark]: Toolchain (without parser) took 7413.38 ms. Allocated memory was 173.0 MB in the beginning and 249.6 MB in the end (delta: 76.5 MB). Free memory was 153.6 MB in the beginning and 142.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 86.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:14,575 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 173.0 MB. Free memory is still 144.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:26:14,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.81 ms. Allocated memory is still 173.0 MB. Free memory was 152.3 MB in the beginning and 142.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:14,576 INFO L168 Benchmark]: Boogie Preprocessor took 38.24 ms. Allocated memory is still 173.0 MB. Free memory was 142.9 MB in the beginning and 141.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:14,576 INFO L168 Benchmark]: RCFGBuilder took 523.96 ms. Allocated memory is still 173.0 MB. Free memory was 141.4 MB in the beginning and 144.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 2.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:14,576 INFO L168 Benchmark]: TraceAbstraction took 6541.74 ms. Allocated memory was 173.0 MB in the beginning and 249.6 MB in the end (delta: 76.5 MB). Free memory was 143.8 MB in the beginning and 142.9 MB in the end (delta: 804.8 kB). Peak memory consumption was 79.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:14,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 173.0 MB. Free memory is still 144.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 284.81 ms. Allocated memory is still 173.0 MB. Free memory was 152.3 MB in the beginning and 142.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.24 ms. Allocated memory is still 173.0 MB. Free memory was 142.9 MB in the beginning and 141.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 523.96 ms. Allocated memory is still 173.0 MB. Free memory was 141.4 MB in the beginning and 144.1 MB in the end (delta: -2.7 MB). Peak memory consumption was 2.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6541.74 ms. Allocated memory was 173.0 MB in the beginning and 249.6 MB in the end (delta: 76.5 MB). Free memory was 143.8 MB in the beginning and 142.9 MB in the end (delta: 804.8 kB). Peak memory consumption was 79.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((2 * i <= sn + 2 && sn + 2 <= 2 * i) && sn < 2 * n + 1) || (sn == 0 && i == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.1s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 65 SDslu, 169 SDs, 0 SdLazy, 425 SolverSat, 59 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 24 NumberOfFragments, 76 HoareAnnotationTreeSize, 13 FomulaSimplifications, 102 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 517 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 105 ConstructedInterpolants, 0 QuantifiedInterpolants, 11555 SizeOfPredicates, 6 NumberOfNonLiveVariables, 272 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 4/42 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...