/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-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-6253b08 [2021-05-06 06:01:53,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-06 06:01:53,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-06 06:01:53,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-06 06:01:53,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-06 06:01:53,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-06 06:01:53,281 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-06 06:01:53,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-06 06:01:53,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-06 06:01:53,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-06 06:01:53,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-06 06:01:53,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-06 06:01:53,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-06 06:01:53,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-06 06:01:53,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-06 06:01:53,299 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-06 06:01:53,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-06 06:01:53,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-06 06:01:53,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-06 06:01:53,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-06 06:01:53,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-06 06:01:53,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-06 06:01:53,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-06 06:01:53,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-06 06:01:53,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-06 06:01:53,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-06 06:01:53,351 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-06 06:01:53,352 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-06 06:01:53,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-06 06:01:53,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-06 06:01:53,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-06 06:01:53,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-06 06:01:53,372 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-06 06:01:53,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-06 06:01:53,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-06 06:01:53,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-06 06:01:53,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-06 06:01:53,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-06 06:01:53,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-06 06:01:53,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-06 06:01:53,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-06 06:01:53,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-06 06:01:53,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-06 06:01:53,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-06 06:01:53,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-06 06:01:53,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-06 06:01:53,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-06 06:01:53,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-06 06:01:53,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-06 06:01:53,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-06 06:01:53,377 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-06 06:01:53,377 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-06 06:01:53,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-06 06:01:53,725 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-06 06:01:53,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-06 06:01:53,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-06 06:01:53,730 INFO L275 PluginConnector]: CDTParser initialized [2021-05-06 06:01:53,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-06 06:01:53,797 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bd13c6c/f496a39551cf41f2bbde816496d4cfa4/FLAG9307d1a28 [2021-05-06 06:01:54,169 INFO L306 CDTParser]: Found 1 translation units. [2021-05-06 06:01:54,170 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-05-06 06:01:54,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bd13c6c/f496a39551cf41f2bbde816496d4cfa4/FLAG9307d1a28 [2021-05-06 06:01:54,576 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bd13c6c/f496a39551cf41f2bbde816496d4cfa4 [2021-05-06 06:01:54,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-06 06:01:54,579 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-06 06:01:54,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-06 06:01:54,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-06 06:01:54,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-06 06:01:54,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110e5b47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54, skipping insertion in model container [2021-05-06 06:01:54,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,595 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-06 06:01:54,611 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-06 06:01:54,716 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-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-06 06:01:54,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:01:54,727 INFO L203 MainTranslator]: Completed pre-run [2021-05-06 06:01:54,751 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-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-05-06 06:01:54,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-06 06:01:54,780 INFO L208 MainTranslator]: Completed translation [2021-05-06 06:01:54,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54 WrapperNode [2021-05-06 06:01:54,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-06 06:01:54,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-06 06:01:54,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-06 06:01:54,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-06 06:01:54,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,797 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,804 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (1/1) ... [2021-05-06 06:01:54,805 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-06 06:01:54,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-06 06:01:54,806 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-06 06:01:54,806 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-06 06:01:54,807 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (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 06:01:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-06 06:01:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-06 06:01:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-06 06:01:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-06 06:01:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-06 06:01:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-06 06:01:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-06 06:01:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-06 06:01:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-06 06:01:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-06 06:01:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-06 06:01:54,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-06 06:01:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-06 06:01:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-06 06:01:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-06 06:01:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-06 06:01:54,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-06 06:01:54,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-06 06:01:54,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-06 06:01:55,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-06 06:01:55,160 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-05-06 06:01:55,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:01:55 BoogieIcfgContainer [2021-05-06 06:01:55,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-06 06:01:55,162 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-06 06:01:55,162 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-06 06:01:55,163 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-06 06:01:55,165 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:01:55" (1/1) ... [2021-05-06 06:01:55,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:01:55 BasicIcfg [2021-05-06 06:01:55,177 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-06 06:01:55,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-06 06:01:55,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-06 06:01:55,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-06 06:01:55,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.05 06:01:54" (1/4) ... [2021-05-06 06:01:55,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6c9035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:01:55, skipping insertion in model container [2021-05-06 06:01:55,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.05 06:01:54" (2/4) ... [2021-05-06 06:01:55,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6c9035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.05 06:01:55, skipping insertion in model container [2021-05-06 06:01:55,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.05 06:01:55" (3/4) ... [2021-05-06 06:01:55,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d6c9035 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:01:55, skipping insertion in model container [2021-05-06 06:01:55,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.05 06:01:55" (4/4) ... [2021-05-06 06:01:55,183 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.cJordan [2021-05-06 06:01:55,187 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-06 06:01:55,190 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-06 06:01:55,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-06 06:01:55,220 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-06 06:01:55,221 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-06 06:01:55,221 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-06 06:01:55,221 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-06 06:01:55,221 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-06 06:01:55,221 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-06 06:01:55,221 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-06 06:01:55,221 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-06 06:01:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-06 06:01:55,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-06 06:01:55,238 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:01:55,238 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:01:55,239 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:01:55,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:01:55,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1405451419, now seen corresponding path program 1 times [2021-05-06 06:01:55,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:01:55,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451187448] [2021-05-06 06:01:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:01:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:55,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:01:55,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:55,587 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 06:01:55,587 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:01:55,587 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451187448] [2021-05-06 06:01:55,588 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451187448] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:01:55,588 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:01:55,588 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-06 06:01:55,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385733895] [2021-05-06 06:01:55,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-06 06:01:55,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:01:55,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-06 06:01:55,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:01:55,603 INFO L87 Difference]: Start difference. First operand has 18 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:01:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:01:55,836 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-05-06 06:01:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-05-06 06:01:55,838 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-06 06:01:55,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:01:55,843 INFO L225 Difference]: With dead ends: 27 [2021-05-06 06:01:55,843 INFO L226 Difference]: Without dead ends: 16 [2021-05-06 06:01:55,845 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 227.3ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-05-06 06:01:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-06 06:01:55,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-06 06:01:55,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:01:55,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-05-06 06:01:55,888 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2021-05-06 06:01:55,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:01:55,889 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-05-06 06:01:55,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:01:55,889 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-05-06 06:01:55,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-06 06:01:55,890 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:01:55,890 INFO L523 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:01:55,890 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-06 06:01:55,890 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:01:55,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:01:55,891 INFO L82 PathProgramCache]: Analyzing trace with hash -2020096506, now seen corresponding path program 1 times [2021-05-06 06:01:55,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:01:55,891 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529613589] [2021-05-06 06:01:55,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:01:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:56,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:01:56,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:01:56,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:01:56,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529613589] [2021-05-06 06:01:56,028 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529613589] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:01:56,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670722972] [2021-05-06 06:01:56,028 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 06:01:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:56,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-06 06:01:56,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-06 06:01:56,147 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:56,153 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:56,170 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:56,175 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:56,209 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:56,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:56,238 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:56,246 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-06 06:01:56,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-06 06:01:56,263 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670722972] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-06 06:01:56,264 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-06 06:01:56,264 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2021-05-06 06:01:56,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746917910] [2021-05-06 06:01:56,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-06 06:01:56,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:01:56,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-06 06:01:56,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-06 06:01:56,267 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 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 06:01:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:01:56,352 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-05-06 06:01:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-06 06:01:56,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 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 15 [2021-05-06 06:01:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:01:56,353 INFO L225 Difference]: With dead ends: 19 [2021-05-06 06:01:56,353 INFO L226 Difference]: Without dead ends: 18 [2021-05-06 06:01:56,354 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 136.9ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-05-06 06:01:56,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-06 06:01:56,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-06 06:01:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:01:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-05-06 06:01:56,357 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2021-05-06 06:01:56,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:01:56,357 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-05-06 06:01:56,358 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 7 states have internal predecessors, (15), 1 states have call successors, (3), 2 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 06:01:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-05-06 06:01:56,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-06 06:01:56,358 INFO L515 BasicCegarLoop]: Found error trace [2021-05-06 06:01:56,358 INFO L523 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-06 06:01:56,573 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-06 06:01:56,573 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-06 06:01:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-06 06:01:56,574 INFO L82 PathProgramCache]: Analyzing trace with hash 11461735, now seen corresponding path program 2 times [2021-05-06 06:01:56,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-06 06:01:56,574 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404667629] [2021-05-06 06:01:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-06 06:01:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-06 06:01:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-06 06:01:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-05-06 06:01:56,705 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-06 06:01:56,705 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404667629] [2021-05-06 06:01:56,706 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404667629] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-06 06:01:56,706 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-06 06:01:56,706 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-06 06:01:56,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149869226] [2021-05-06 06:01:56,706 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-06 06:01:56,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-06 06:01:56,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-06 06:01:56,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-06 06:01:56,708 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:01:56,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-06 06:01:56,746 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-05-06 06:01:56,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-06 06:01:56,746 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-06 06:01:56,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-06 06:01:56,746 INFO L225 Difference]: With dead ends: 16 [2021-05-06 06:01:56,747 INFO L226 Difference]: Without dead ends: 0 [2021-05-06 06:01:56,747 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.5ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-06 06:01:56,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-06 06:01:56,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-06 06:01:56,748 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 06:01:56,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-06 06:01:56,748 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-05-06 06:01:56,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-06 06:01:56,748 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-06 06:01:56,748 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-06 06:01:56,748 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-06 06:01:56,749 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-06 06:01:56,749 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-06 06:01:56,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.05 06:01:56 BasicIcfg [2021-05-06 06:01:56,754 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-06 06:01:56,755 INFO L168 Benchmark]: Toolchain (without parser) took 2174.85 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 138.1 MB in the beginning and 178.0 MB in the end (delta: -39.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:01:56,755 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 173.0 MB. Free memory is still 154.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:01:56,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 197.52 ms. Allocated memory is still 173.0 MB. Free memory was 137.9 MB in the beginning and 156.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-06 06:01:56,756 INFO L168 Benchmark]: Boogie Preprocessor took 23.94 ms. Allocated memory is still 173.0 MB. Free memory was 156.0 MB in the beginning and 154.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:01:56,756 INFO L168 Benchmark]: RCFGBuilder took 355.79 ms. Allocated memory is still 173.0 MB. Free memory was 154.4 MB in the beginning and 140.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-06 06:01:56,757 INFO L168 Benchmark]: IcfgTransformer took 14.86 ms. Allocated memory is still 173.0 MB. Free memory was 140.4 MB in the beginning and 139.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-06 06:01:56,757 INFO L168 Benchmark]: TraceAbstraction took 1575.46 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 138.7 MB in the beginning and 178.0 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-06 06:01:56,759 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 173.0 MB. Free memory is still 154.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 197.52 ms. Allocated memory is still 173.0 MB. Free memory was 137.9 MB in the beginning and 156.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.94 ms. Allocated memory is still 173.0 MB. Free memory was 156.0 MB in the beginning and 154.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 355.79 ms. Allocated memory is still 173.0 MB. Free memory was 154.4 MB in the beginning and 140.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 14.86 ms. Allocated memory is still 173.0 MB. Free memory was 140.4 MB in the beginning and 139.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1575.46 ms. Allocated memory was 173.0 MB in the beginning and 207.6 MB in the end (delta: 34.6 MB). Free memory was 138.7 MB in the beginning and 178.0 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: 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 3 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1531.0ms, OverallIterations: 3, TraceHistogramMax: 3, EmptinessCheckTime: 10.3ms, AutomataDifference: 380.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 37 SDtfs, 24 SDslu, 88 SDs, 0 SdLazy, 112 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 143.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 430.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.5ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 27.8ms SsaConstructionTime, 100.1ms SatisfiabilityAnalysisTime, 626.4ms InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 276 SizeOfPredicates, 3 NumberOfNonLiveVariables, 135 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 6/10 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...