/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:52:16,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:52:16,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:52:16,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:52:16,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:52:16,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:52:16,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:52:16,402 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:52:16,404 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:52:16,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:52:16,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:52:16,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:52:16,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:52:16,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:52:16,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:52:16,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:52:16,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:52:16,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:52:16,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:52:16,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:52:16,420 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:52:16,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:52:16,422 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:52:16,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:52:16,425 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:52:16,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:52:16,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:52:16,432 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:52:16,433 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:52:16,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:52:16,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:52:16,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:52:16,444 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:52:16,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:52:16,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:52:16,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:52:16,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:52:16,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:52:16,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:52:16,445 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:52:16,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:52:16,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:52:16,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:52:16,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:52:16,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:52:16,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:52:16,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:52:16,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:52:16,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:52:16,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:52:16,447 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:52:16,447 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:52:16,776 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:52:16,794 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:52:16,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:52:16,797 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:52:16,798 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:52:16,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i [2021-05-06 06:52:16,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9315b52c7/7a018704d8f84995b0e64122f4fc706f/FLAG98bfcb317 [2021-05-06 06:52:17,328 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:52:17,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i [2021-05-06 06:52:17,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9315b52c7/7a018704d8f84995b0e64122f4fc706f/FLAG98bfcb317 [2021-05-06 06:52:17,354 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9315b52c7/7a018704d8f84995b0e64122f4fc706f [2021-05-06 06:52:17,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:52:17,361 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:52:17,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:17,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:52:17,369 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:52:17,369 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,370 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc6d60d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17, skipping insertion in model container [2021-05-06 06:52:17,370 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:52:17,391 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:52:17,535 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-05-06 06:52:17,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:17,551 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:52:17,561 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark05_conjunctive.i[873,886] [2021-05-06 06:52:17,564 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:52:17,590 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:52:17,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17 WrapperNode [2021-05-06 06:52:17,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:52:17,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:52:17,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:52:17,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:52:17,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,645 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (1/1) ... [2021-05-06 06:52:17,654 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:52:17,654 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:52:17,655 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:52:17,655 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:52:17,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:52:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:52:17,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:52:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:52:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-06 06:52:17,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:52:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:52:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-06 06:52:17,738 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-06 06:52:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:52:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:52:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:52:17,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-06 06:52:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:52:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:52:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:52:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:52:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:52:17,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:52:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:52:17,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:52:18,017 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:52:18,017 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-06 06:52:18,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:18 BoogieIcfgContainer [2021-05-06 06:52:18,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:52:18,019 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:52:18,019 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:52:18,020 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:52:18,022 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:18" (1/1) ... [2021-05-06 06:52:18,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:18 BasicIcfg [2021-05-06 06:52:18,051 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:52:18,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:52:18,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:52:18,055 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:52:18,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:52:17" (1/4) ... [2021-05-06 06:52:18,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e570d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:18, skipping insertion in model container [2021-05-06 06:52:18,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:52:17" (2/4) ... [2021-05-06 06:52:18,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e570d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:52:18, skipping insertion in model container [2021-05-06 06:52:18,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:52:18" (3/4) ... [2021-05-06 06:52:18,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645e570d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:18, skipping insertion in model container [2021-05-06 06:52:18,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:52:18" (4/4) ... [2021-05-06 06:52:18,058 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark05_conjunctive.iJordan [2021-05-06 06:52:18,062 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:52:18,065 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:52:18,079 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:52:18,096 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:52:18,096 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:52:18,096 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:52:18,096 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:52:18,096 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:52:18,096 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:52:18,096 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:52:18,096 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:52:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-06 06:52:18,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-06 06:52:18,113 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:18,113 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:18,114 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:18,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:18,118 INFO L82 PathProgramCache]: Analyzing trace with hash 713533472, now seen corresponding path program 1 times [2021-05-06 06:52:18,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:18,125 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696151758] [2021-05-06 06:52:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:18,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:18,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:18,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:18,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:18,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696151758] [2021-05-06 06:52:18,400 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696151758] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:52:18,401 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:52:18,401 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-06 06:52:18,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685876492] [2021-05-06 06:52:18,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-06 06:52:18,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:18,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-06 06:52:18,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-06 06:52:18,421 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:18,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:18,625 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-06 06:52:18,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-06 06:52:18,627 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-06 06:52:18,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:18,633 INFO L225 Difference]: With dead ends: 22 [2021-05-06 06:52:18,633 INFO L226 Difference]: Without dead ends: 15 [2021-05-06 06:52:18,635 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:52:18,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-06 06:52:18,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-06 06:52:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-05-06 06:52:18,660 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2021-05-06 06:52:18,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:18,661 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-05-06 06:52:18,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:18,661 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-05-06 06:52:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-06 06:52:18,662 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:18,662 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:18,662 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:52:18,662 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:18,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:18,663 INFO L82 PathProgramCache]: Analyzing trace with hash -578658626, now seen corresponding path program 1 times [2021-05-06 06:52:18,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:18,664 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103912650] [2021-05-06 06:52:18,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:18,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:18,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:18,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:18,935 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:18,935 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103912650] [2021-05-06 06:52:18,936 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103912650] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:18,936 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2071435961] [2021-05-06 06:52:18,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:52:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:19,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 06:52:19,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:52:19,066 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:19,079 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:19,112 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:19,125 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:19,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:19,141 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:19,162 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:19,200 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2071435961] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:19,200 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:52:19,200 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 12 [2021-05-06 06:52:19,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233718523] [2021-05-06 06:52:19,202 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-05-06 06:52:19,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:19,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-05-06 06:52:19,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-05-06 06:52:19,203 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:19,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:19,527 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2021-05-06 06:52:19,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 06:52:19,528 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-06 06:52:19,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:19,529 INFO L225 Difference]: With dead ends: 21 [2021-05-06 06:52:19,529 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 06:52:19,533 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 425.4ms TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-05-06 06:52:19,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 06:52:19,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-05-06 06:52:19,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:19,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-06 06:52:19,539 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-05-06 06:52:19,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:19,539 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-06 06:52:19,544 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 9 states have internal predecessors, (15), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:19,545 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-06 06:52:19,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-06 06:52:19,545 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:52:19,545 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:52:19,769 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 06:52:19,770 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:52:19,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:52:19,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1129716260, now seen corresponding path program 2 times [2021-05-06 06:52:19,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:52:19,771 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000133508] [2021-05-06 06:52:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:52:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:19,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:52:19,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:52:19,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:19,989 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:52:19,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000133508] [2021-05-06 06:52:19,989 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000133508] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:19,989 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025952443] [2021-05-06 06:52:19,989 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 [2021-05-06 06:52:20,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-06 06:52:20,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-06 06:52:20,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2021-05-06 06:52:20,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:52:20,077 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,095 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,123 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,130 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,199 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,207 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,219 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,242 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:52:20,261 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:52:20,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025952443] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:52:20,262 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:52:20,262 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 14 [2021-05-06 06:52:20,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196840829] [2021-05-06 06:52:20,263 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-06 06:52:20,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:52:20,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-06 06:52:20,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-05-06 06:52:20,265 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:20,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:52:20,553 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-06 06:52:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-06 06:52:20,553 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-05-06 06:52:20,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:52:20,554 INFO L225 Difference]: With dead ends: 16 [2021-05-06 06:52:20,554 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:52:20,554 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 12 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 389.7ms TimeCoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2021-05-06 06:52:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:52:20,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:52:20,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-06 06:52:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:52:20,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-05-06 06:52:20,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:52:20,555 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:52:20,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 11 states have internal predecessors, (17), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:52:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:52:20,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:52:20,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-06 06:52:20,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:52:20 BasicIcfg [2021-05-06 06:52:20,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:52:20,784 INFO L168 Benchmark]: Toolchain (without parser) took 3423.07 ms. Allocated memory was 179.3 MB in the beginning and 231.7 MB in the end (delta: 52.4 MB). Free memory was 144.0 MB in the beginning and 182.7 MB in the end (delta: -38.7 MB). Peak memory consumption was 14.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:20,784 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 179.3 MB. Free memory is still 160.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:52:20,784 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.00 ms. Allocated memory is still 179.3 MB. Free memory was 143.8 MB in the beginning and 163.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:20,785 INFO L168 Benchmark]: Boogie Preprocessor took 51.59 ms. Allocated memory is still 179.3 MB. Free memory was 163.5 MB in the beginning and 162.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:20,785 INFO L168 Benchmark]: RCFGBuilder took 363.95 ms. Allocated memory is still 179.3 MB. Free memory was 161.9 MB in the beginning and 148.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:20,785 INFO L168 Benchmark]: IcfgTransformer took 31.74 ms. Allocated memory is still 179.3 MB. Free memory was 148.0 MB in the beginning and 146.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:20,785 INFO L168 Benchmark]: TraceAbstraction took 2731.48 ms. Allocated memory was 179.3 MB in the beginning and 231.7 MB in the end (delta: 52.4 MB). Free memory was 146.3 MB in the beginning and 182.7 MB in the end (delta: -36.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2021-05-06 06:52:20,786 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 179.3 MB. Free memory is still 160.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 237.00 ms. Allocated memory is still 179.3 MB. Free memory was 143.8 MB in the beginning and 163.5 MB in the end (delta: -19.7 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.59 ms. Allocated memory is still 179.3 MB. Free memory was 163.5 MB in the beginning and 162.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 363.95 ms. Allocated memory is still 179.3 MB. Free memory was 161.9 MB in the beginning and 148.0 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 31.74 ms. Allocated memory is still 179.3 MB. Free memory was 148.0 MB in the beginning and 146.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2731.48 ms. Allocated memory was 179.3 MB in the beginning and 231.7 MB in the end (delta: 52.4 MB). Free memory was 146.3 MB in the beginning and 182.7 MB in the end (delta: -36.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2686.2ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 10.0ms, AutomataDifference: 848.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 36 SDtfs, 41 SDslu, 71 SDs, 0 SdLazy, 138 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 230.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 927.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.9ms SsaConstructionTime, 138.3ms SatisfiabilityAnalysisTime, 1008.2ms InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 311 SizeOfPredicates, 4 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 5/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...