/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 22:18:47,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 22:18:47,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 22:18:47,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 22:18:47,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 22:18:47,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 22:18:47,978 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 22:18:47,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 22:18:47,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 22:18:47,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 22:18:47,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 22:18:47,989 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 22:18:47,990 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 22:18:47,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 22:18:47,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 22:18:47,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 22:18:47,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 22:18:47,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 22:18:47,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 22:18:47,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 22:18:47,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 22:18:47,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 22:18:47,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 22:18:48,001 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 22:18:48,010 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 22:18:48,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 22:18:48,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 22:18:48,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 22:18:48,020 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 22:18:48,036 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 22:18:48,036 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 22:18:48,039 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 22:18:48,039 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 22:18:48,039 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 22:18:48,039 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 22:18:48,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 22:18:48,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 22:18:48,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 22:18:48,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 22:18:48,040 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 22:18:48,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 22:18:48,040 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 22:18:48,040 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 22:18:48,041 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 22:18:48,041 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 22:18:48,041 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 22:18:48,041 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 22:18:48,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 22:18:48,041 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 22:18:48,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 22:18:48,042 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 22:18:48,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 22:18:48,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 22:18:48,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 22:18:48,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 22:18:48,310 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 22:18:48,311 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 22:18:48,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c [2021-05-02 22:18:48,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e02e22d/4b32d8ab0e604aeab1fc42d45f9abbbf/FLAG8a967580a [2021-05-02 22:18:48,692 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 22:18:48,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c [2021-05-02 22:18:48,697 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e02e22d/4b32d8ab0e604aeab1fc42d45f9abbbf/FLAG8a967580a [2021-05-02 22:18:48,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38e02e22d/4b32d8ab0e604aeab1fc42d45f9abbbf [2021-05-02 22:18:48,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 22:18:48,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 22:18:48,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 22:18:48,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 22:18:48,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 22:18:48,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5149173f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48, skipping insertion in model container [2021-05-02 22:18:48,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 22:18:48,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 22:18:48,805 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c[458,471] [2021-05-02 22:18:48,814 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 22:18:48,819 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 22:18:48,827 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/ps4-ll_unwindbound1.c[458,471] [2021-05-02 22:18:48,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 22:18:48,839 INFO L208 MainTranslator]: Completed translation [2021-05-02 22:18:48,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48 WrapperNode [2021-05-02 22:18:48,840 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 22:18:48,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 22:18:48,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 22:18:48,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 22:18:48,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,882 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (1/1) ... [2021-05-02 22:18:48,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 22:18:48,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 22:18:48,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 22:18:48,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 22:18:48,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (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 22:18:48,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 22:18:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 22:18:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 22:18:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 22:18:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 22:18:48,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 22:18:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 22:18:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 22:18:48,985 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 22:18:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 22:18:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_short [2021-05-02 22:18:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 22:18:48,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 22:18:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 22:18:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 22:18:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 22:18:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 22:18:48,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 22:18:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 22:18:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 22:18:49,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 22:18:49,209 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 22:18:49,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:18:49 BoogieIcfgContainer [2021-05-02 22:18:49,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 22:18:49,211 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 22:18:49,211 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 22:18:49,211 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 22:18:49,213 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:18:49" (1/1) ... [2021-05-02 22:18:49,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 10:18:49 BasicIcfg [2021-05-02 22:18:49,224 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 22:18:49,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 22:18:49,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 22:18:49,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 22:18:49,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 10:18:48" (1/4) ... [2021-05-02 22:18:49,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1719f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 10:18:49, skipping insertion in model container [2021-05-02 22:18:49,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 10:18:48" (2/4) ... [2021-05-02 22:18:49,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1719f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 10:18:49, skipping insertion in model container [2021-05-02 22:18:49,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 10:18:49" (3/4) ... [2021-05-02 22:18:49,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1719f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 10:18:49, skipping insertion in model container [2021-05-02 22:18:49,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 10:18:49" (4/4) ... [2021-05-02 22:18:49,229 INFO L111 eAbstractionObserver]: Analyzing ICFG ps4-ll_unwindbound1.cJordan [2021-05-02 22:18:49,233 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 22:18:49,236 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 22:18:49,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 22:18:49,258 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 22:18:49,258 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 22:18:49,259 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 22:18:49,259 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 22:18:49,259 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 22:18:49,259 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 22:18:49,259 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 22:18:49,259 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 22:18:49,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 22:18:49,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 22:18:49,273 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:18:49,274 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:18:49,274 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:18:49,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:18:49,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1984627219, now seen corresponding path program 1 times [2021-05-02 22:18:49,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:18:49,287 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425897704] [2021-05-02 22:18:49,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:18:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:18:49,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 22:18:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:18:49,427 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 22:18:49,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:18:49,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425897704] [2021-05-02 22:18:49,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425897704] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:18:49,429 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:18:49,429 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 22:18:49,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603196020] [2021-05-02 22:18:49,432 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 22:18:49,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:18:49,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 22:18:49,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 22:18:49,442 INFO L87 Difference]: Start difference. First operand has 23 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 22:18:49,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:18:49,503 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-05-02 22:18:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 22:18:49,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2021-05-02 22:18:49,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:18:49,508 INFO L225 Difference]: With dead ends: 24 [2021-05-02 22:18:49,509 INFO L226 Difference]: Without dead ends: 19 [2021-05-02 22:18:49,509 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 22:18:49,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-05-02 22:18:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-05-02 22:18:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 22:18:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-05-02 22:18:49,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 11 [2021-05-02 22:18:49,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:18:49,530 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-05-02 22:18:49,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 22:18:49,530 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-05-02 22:18:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 22:18:49,531 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:18:49,531 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:18:49,531 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 22:18:49,531 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:18:49,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:18:49,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1423332195, now seen corresponding path program 1 times [2021-05-02 22:18:49,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:18:49,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052416453] [2021-05-02 22:18:49,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:18:49,544 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:18:49,544 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823385555] [2021-05-02 22:18:49,544 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 [2021-05-02 22:18:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:18:49,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-05-02 22:18:49,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:18:49,633 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:18:49,638 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:18:49,639 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:18:49,652 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:18:49,655 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 22:18:49,669 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 22:18:49,670 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:18:49,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052416453] [2021-05-02 22:18:49,670 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:18:49,670 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823385555] [2021-05-02 22:18:49,670 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823385555] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:18:49,670 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:18:49,670 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 22:18:49,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162232694] [2021-05-02 22:18:49,671 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 22:18:49,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:18:49,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 22:18:49,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 22:18:49,672 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 22:18:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:18:49,680 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-05-02 22:18:49,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 22:18:49,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 12 [2021-05-02 22:18:49,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:18:49,681 INFO L225 Difference]: With dead ends: 20 [2021-05-02 22:18:49,681 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 22:18:49,682 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 22:18:49,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 22:18:49,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-02 22:18:49,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.25) internal successors, (15), 13 states have internal predecessors, (15), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 22:18:49,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-05-02 22:18:49,685 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-05-02 22:18:49,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:18:49,685 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-05-02 22:18:49,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 22:18:49,685 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-05-02 22:18:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 22:18:49,685 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:18:49,686 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:18:49,904 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-05-02 22:18:49,904 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:18:49,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:18:49,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1424404671, now seen corresponding path program 1 times [2021-05-02 22:18:49,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:18:49,905 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002092535] [2021-05-02 22:18:49,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:18:49,916 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:18:49,916 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645858735] [2021-05-02 22:18:49,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:18:49,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 22:18:49,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-05-02 22:18:49,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 22:18:50,007 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 22:18:50,007 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 22:18:50,007 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002092535] [2021-05-02 22:18:50,007 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 22:18:50,008 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645858735] [2021-05-02 22:18:50,008 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645858735] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 22:18:50,008 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 22:18:50,008 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 22:18:50,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522946998] [2021-05-02 22:18:50,008 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 22:18:50,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 22:18:50,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 22:18:50,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 22:18:50,009 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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) [2021-05-02 22:18:50,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 22:18:50,039 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2021-05-02 22:18:50,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 22:18:50,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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 12 [2021-05-02 22:18:50,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 22:18:50,039 INFO L225 Difference]: With dead ends: 28 [2021-05-02 22:18:50,040 INFO L226 Difference]: Without dead ends: 26 [2021-05-02 22:18:50,040 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.4ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 22:18:50,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-05-02 22:18:50,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-05-02 22:18:50,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-05-02 22:18:50,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-05-02 22:18:50,044 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 12 [2021-05-02 22:18:50,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 22:18:50,044 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-05-02 22:18:50,044 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 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) [2021-05-02 22:18:50,044 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-05-02 22:18:50,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 22:18:50,044 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 22:18:50,044 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 22:18:50,260 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:18:50,260 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 22:18:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 22:18:50,264 INFO L82 PathProgramCache]: Analyzing trace with hash -381498108, now seen corresponding path program 1 times [2021-05-02 22:18:50,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 22:18:50,264 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94339549] [2021-05-02 22:18:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 22:18:50,274 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 22:18:50,274 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348731997] [2021-05-02 22:18:50,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:18:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 22:18:50,336 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 22:18:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 22:18:50,350 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 22:18:50,379 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 22:18:50,379 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 22:18:50,593 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 22:18:50,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 10:18:50 BasicIcfg [2021-05-02 22:18:50,612 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 22:18:50,612 INFO L168 Benchmark]: Toolchain (without parser) took 1902.93 ms. Allocated memory is still 179.3 MB. Free memory was 144.9 MB in the beginning and 130.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 8.0 GB. [2021-05-02 22:18:50,613 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 179.3 MB. Free memory is still 161.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 22:18:50,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 129.82 ms. Allocated memory is still 179.3 MB. Free memory was 144.7 MB in the beginning and 135.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 22:18:50,613 INFO L168 Benchmark]: Boogie Preprocessor took 48.00 ms. Allocated memory is still 179.3 MB. Free memory was 135.1 MB in the beginning and 161.9 MB in the end (delta: -26.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. [2021-05-02 22:18:50,613 INFO L168 Benchmark]: RCFGBuilder took 321.10 ms. Allocated memory is still 179.3 MB. Free memory was 161.9 MB in the beginning and 149.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 22:18:50,614 INFO L168 Benchmark]: IcfgTransformer took 13.32 ms. Allocated memory is still 179.3 MB. Free memory was 149.7 MB in the beginning and 148.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 22:18:50,614 INFO L168 Benchmark]: TraceAbstraction took 1386.58 ms. Allocated memory is still 179.3 MB. Free memory was 148.2 MB in the beginning and 130.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2021-05-02 22:18:50,615 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 179.3 MB. Free memory is still 161.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 129.82 ms. Allocated memory is still 179.3 MB. Free memory was 144.7 MB in the beginning and 135.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.00 ms. Allocated memory is still 179.3 MB. Free memory was 135.1 MB in the beginning and 161.9 MB in the end (delta: -26.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 321.10 ms. Allocated memory is still 179.3 MB. Free memory was 161.9 MB in the beginning and 149.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * IcfgTransformer took 13.32 ms. Allocated memory is still 179.3 MB. Free memory was 149.7 MB in the beginning and 148.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1386.58 ms. Allocated memory is still 179.3 MB. Free memory was 148.2 MB in the beginning and 130.9 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] int counter = 0; VAL [\old(counter)=15, counter=0] [L19] short k; [L20] long long y, x, c; [L21] k = __VERIFIER_nondet_short() [L23] y = 0 [L24] x = 0 [L25] c = 0 VAL [\old(counter)=0, c=0, counter=0, k=2, x=0, y=0] [L27] EXPR counter++ VAL [\old(counter)=0, c=0, counter=1, counter++=0, k=2, x=0, y=0] [L27] COND TRUE counter++<1 [L28] CALL __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L10] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L28] RET __VERIFIER_assert(4*x - y*y*y*y - 2*y*y*y - y*y == 0) VAL [\old(counter)=0, c=0, counter=1, k=2, x=0, y=0] [L30] COND FALSE !(!(c < k)) [L33] c = c + 1 [L34] y = y + 1 [L35] x = y * y * y + x VAL [\old(counter)=0, c=1, counter=1, k=2, x=1, y=1] [L27] EXPR counter++ VAL [\old(counter)=0, c=1, counter=2, counter++=1, k=2, x=1, y=1] [L27] COND FALSE !(counter++<1) [L37] CALL __VERIFIER_assert(k*y - (y*y) == 0) VAL [\old(cond)=0, \old(counter)=0, counter=2] [L10] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] [L12] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1336.6ms, OverallIterations: 4, TraceHistogramMax: 2, EmptinessCheckTime: 8.7ms, AutomataDifference: 118.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 62 SDtfs, 12 SDslu, 88 SDs, 0 SdLazy, 41 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 57.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 55.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 18.1ms AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 30.6ms SsaConstructionTime, 78.7ms SatisfiabilityAnalysisTime, 188.5ms InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 2 NumberOfNonLiveVariables, 210 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...