/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-industry-pattern/mod3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:23:29,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:23:29,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:23:29,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:23:29,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:23:29,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:23:29,587 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:23:29,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:23:29,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:23:29,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:23:29,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:23:29,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:23:29,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:23:29,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:23:29,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:23:29,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:23:29,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:23:29,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:23:29,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:23:29,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:23:29,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:23:29,619 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:23:29,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:23:29,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:23:29,627 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:23:29,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:23:29,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:23:29,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:23:29,655 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:23:29,666 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:23:29,667 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:23:29,669 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:23:29,670 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:23:29,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:23:29,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:23:29,670 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:23:29,670 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:23:29,670 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:23:29,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:23:29,671 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:23:29,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:23:29,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:23:29,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:23:29,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:23:29,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:23:29,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:23:29,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:23:29,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:23:29,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:23:29,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:23:29,674 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:23:29,674 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:23:29,980 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:23:29,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:23:29,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:23:29,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:23:29,999 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:23:30,002 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c [2021-05-02 18:23:30,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11222453a/effbb009f14b4b50b6d8484aec5e1449/FLAGd49e14977 [2021-05-02 18:23:30,428 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:23:30,428 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/mod3.c [2021-05-02 18:23:30,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11222453a/effbb009f14b4b50b6d8484aec5e1449/FLAGd49e14977 [2021-05-02 18:23:30,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11222453a/effbb009f14b4b50b6d8484aec5e1449 [2021-05-02 18:23:30,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:23:30,839 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:23:30,840 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:23:30,840 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:23:30,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:23:30,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:23:30" (1/1) ... [2021-05-02 18:23:30,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dc54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:30, skipping insertion in model container [2021-05-02 18:23:30,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:23:30" (1/1) ... [2021-05-02 18:23:30,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:23:30,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:23:30,985 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-industry-pattern/mod3.c[394,407] [2021-05-02 18:23:30,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:23:31,001 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:23:31,012 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-industry-pattern/mod3.c[394,407] [2021-05-02 18:23:31,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:23:31,026 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:23:31,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31 WrapperNode [2021-05-02 18:23:31,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:23:31,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:23:31,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:23:31,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:23:31,035 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,039 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,040 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,063 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:23:31,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:23:31,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:23:31,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:23:31,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:23:31,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:23:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:23:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:23:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:23:31,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:23:31,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:23:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:23:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:23:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:23:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:23:31,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:23:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:23:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:23:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:23:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:23:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:23:31,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:23:31,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:23:31,380 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:23:31,380 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 18:23:31,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:23:31 BoogieIcfgContainer [2021-05-02 18:23:31,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:23:31,382 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:23:31,382 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:23:31,383 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:23:31,385 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:23:31" (1/1) ... [2021-05-02 18:23:31,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:23:31 BasicIcfg [2021-05-02 18:23:31,417 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:23:31,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:23:31,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:23:31,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:23:31,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:23:30" (1/4) ... [2021-05-02 18:23:31,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a49633d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:23:31, skipping insertion in model container [2021-05-02 18:23:31,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:23:31" (2/4) ... [2021-05-02 18:23:31,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a49633d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:23:31, skipping insertion in model container [2021-05-02 18:23:31,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:23:31" (3/4) ... [2021-05-02 18:23:31,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a49633d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:23:31, skipping insertion in model container [2021-05-02 18:23:31,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:23:31" (4/4) ... [2021-05-02 18:23:31,423 INFO L111 eAbstractionObserver]: Analyzing ICFG mod3.cJordan [2021-05-02 18:23:31,427 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:23:31,446 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:23:31,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:23:31,503 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:23:31,504 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:23:31,504 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:23:31,504 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:23:31,504 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:23:31,504 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:23:31,504 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:23:31,504 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:23:31,515 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 18 states have internal predecessors, (24), 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) [2021-05-02 18:23:31,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:23:31,520 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:31,521 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:31,521 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:31,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:31,526 INFO L82 PathProgramCache]: Analyzing trace with hash -281797978, now seen corresponding path program 1 times [2021-05-02 18:23:31,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:31,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637877917] [2021-05-02 18:23:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:31,787 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:31,787 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637877917] [2021-05-02 18:23:31,788 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637877917] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:23:31,788 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:23:31,788 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:23:31,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750639546] [2021-05-02 18:23:31,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:23:31,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:31,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:23:31,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:23:31,808 INFO L87 Difference]: Start difference. First operand has 24 states, 16 states have (on average 1.5) internal successors, (24), 18 states have internal predecessors, (24), 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 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-05-02 18:23:31,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:31,857 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-05-02 18:23:31,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:23:31,859 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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 [2021-05-02 18:23:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:31,868 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:23:31,869 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:23:31,870 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:23:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:23:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:23:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-05-02 18:23:31,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-05-02 18:23:31,896 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 12 [2021-05-02 18:23:31,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:31,897 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-05-02 18:23:31,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 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) [2021-05-02 18:23:31,897 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-05-02 18:23:31,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:23:31,898 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:31,898 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:31,898 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:23:31,899 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:31,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:31,899 INFO L82 PathProgramCache]: Analyzing trace with hash 795142128, now seen corresponding path program 1 times [2021-05-02 18:23:31,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:31,900 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816638552] [2021-05-02 18:23:31,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:31,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:32,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:32,047 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:32,047 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816638552] [2021-05-02 18:23:32,047 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816638552] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:23:32,048 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:23:32,048 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:23:32,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913073501] [2021-05-02 18:23:32,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:23:32,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:32,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:23:32,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:23:32,050 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-05-02 18:23:32,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:32,143 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-05-02 18:23:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:23:32,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 13 [2021-05-02 18:23:32,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:32,144 INFO L225 Difference]: With dead ends: 23 [2021-05-02 18:23:32,144 INFO L226 Difference]: Without dead ends: 22 [2021-05-02 18:23:32,145 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 49.1ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:23:32,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-05-02 18:23:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-05-02 18:23:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 states have internal predecessors, (18), 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) [2021-05-02 18:23:32,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2021-05-02 18:23:32,148 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 13 [2021-05-02 18:23:32,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:32,148 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2021-05-02 18:23:32,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-05-02 18:23:32,149 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2021-05-02 18:23:32,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 18:23:32,149 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:23:32,149 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:23:32,150 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:23:32,150 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:23:32,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:23:32,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1068283583, now seen corresponding path program 1 times [2021-05-02 18:23:32,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:23:32,151 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241416670] [2021-05-02 18:23:32,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:23:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:23:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:23:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:23:32,409 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:23:32,410 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241416670] [2021-05-02 18:23:32,410 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241416670] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:23:32,410 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:23:32,410 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:23:32,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328857948] [2021-05-02 18:23:32,411 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:23:32,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:23:32,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:23:32,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:23:32,413 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (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) [2021-05-02 18:23:32,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:23:32,798 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2021-05-02 18:23:32,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:23:32,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (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 16 [2021-05-02 18:23:32,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:23:32,799 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:23:32,799 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:23:32,800 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 167.4ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:23:32,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:23:32,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:23:32,800 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) [2021-05-02 18:23:32,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:23:32,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-05-02 18:23:32,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:23:32,801 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:23:32,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (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) [2021-05-02 18:23:32,801 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:23:32,801 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:23:32,801 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:23:32,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:23:32 BasicIcfg [2021-05-02 18:23:32,804 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:23:32,805 INFO L168 Benchmark]: Toolchain (without parser) took 1965.40 ms. Allocated memory is still 186.6 MB. Free memory was 152.4 MB in the beginning and 120.9 MB in the end (delta: 31.5 MB). Peak memory consumption was 32.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:32,805 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 186.6 MB. Free memory is still 168.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:23:32,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.40 ms. Allocated memory is still 186.6 MB. Free memory was 152.2 MB in the beginning and 142.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:32,806 INFO L168 Benchmark]: Boogie Preprocessor took 51.88 ms. Allocated memory is still 186.6 MB. Free memory was 142.7 MB in the beginning and 170.8 MB in the end (delta: -28.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:32,807 INFO L168 Benchmark]: RCFGBuilder took 301.80 ms. Allocated memory is still 186.6 MB. Free memory was 170.8 MB in the beginning and 156.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:32,807 INFO L168 Benchmark]: IcfgTransformer took 35.26 ms. Allocated memory is still 186.6 MB. Free memory was 156.5 MB in the beginning and 154.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:32,808 INFO L168 Benchmark]: TraceAbstraction took 1385.69 ms. Allocated memory is still 186.6 MB. Free memory was 154.4 MB in the beginning and 120.9 MB in the end (delta: 33.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:23:32,810 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 186.6 MB. Free memory is still 168.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 186.40 ms. Allocated memory is still 186.6 MB. Free memory was 152.2 MB in the beginning and 142.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 51.88 ms. Allocated memory is still 186.6 MB. Free memory was 142.7 MB in the beginning and 170.8 MB in the end (delta: -28.0 MB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 301.80 ms. Allocated memory is still 186.6 MB. Free memory was 170.8 MB in the beginning and 156.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 35.26 ms. Allocated memory is still 186.6 MB. Free memory was 156.5 MB in the beginning and 154.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1385.69 ms. Allocated memory is still 186.6 MB. Free memory was 154.4 MB in the beginning and 120.9 MB in the end (delta: 33.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1300.0ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 9.9ms, AutomataDifference: 560.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 63 SDtfs, 61 SDslu, 26 SDs, 0 SdLazy, 72 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 352.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 268.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 19.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 32.3ms SsaConstructionTime, 129.0ms SatisfiabilityAnalysisTime, 436.9ms InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 300 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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...